What is pisciculture?​

Answers

Answer 1

Answer:

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The breeding, rearing, and transplantation of fish by artificial means is called pisciculture, in other words, fish farming. It is the principal form of aquaculture, while other methods may fall under mariculture. It involves raising fish commercially in tanks or enclosures, usually for food


Related Questions

explain the effects on anaerobic respiration on plants and animals​

Answers

Answer:

Anaerobic respiration in plants produces ethanol (C2H5OH) whose accumulation may kill the plant, whereas in animals anaerobic respiration produces lactic acid (CH3CH(OH)COOH) that however cannot cause death of animal but lead to minor muscle cramps, but they can be cured with hot water bath or a massage.

Compare blood cells to plant cells

Answers

Answer:

Plant cells are encompassed by a rigid cell wall, while human white blood cells have a plasma membrane.

Explanation:

A fish population of 250 in a pond has maximum annual rate of increase of 0.8_ If the carrying capacity of the pond is 1,500 for this species, what is the expected population size after_ one year? 167
417
450 500

Answers

The expected population size after one year is 450 individuals because it is less than the carrying capacity of the pond.

The annual rate of increase of a fish population of 250 in a pond has a maximum annual rate of increase of 0.8, and the carrying capacity of the pond is 1,500 for this species, what is the expected population size after one year?The annual rate of increase for a fish population is defined as the maximum number of new individuals that can be produced in a population during a year.

The formula for calculating the rate of increase is:

Rate of increase = (birth rate + immigration rate) - (death rate + emigration rate)For this population, the annual rate of increase is 0.8. That means that in one year, the population can increase by 0.8 * 250 = 200 individuals. So if the population size at the start of the year is 250, the population size at the end of the year would be 250 + 200 = 450 individuals.

The carrying capacity of a pond is the maximum number of individuals of a species that can be sustained by the environment. In this case, the carrying capacity is 1,500 individuals. However, the population size cannot exceed the carrying capacity of the pond, so we need to adjust our answer accordingly. Therefore, the expected population size after one year is 450 individuals because it is less than the carrying capacity of the pond. Therefore, the answer is 450.

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3. Which type(s) of cells have genetic material that is contained in a nucleus?

A. bacterial
B. plants only
C. animals only
D. both plant and animal cells

Answers

Answer:

D. Both plant and animal cells

Explanation:

The explanation is that animal and plant cells are eukaryotic cells which means they have a nucleus which contains and protects the genetic material. Bacteria is a prokaryotic cell which means it does have genetic material but doesn't have a nucleus.

The building blocks of DNA are

Answers

Answer:

nucleotides

Explanation:

made of three parts , phosphate group, sugar group and one of four nitrogen bases

Answer:

Chromosomes

Explanation:

The chromosomes from both parents from the DNA of the offspring

pls help me I'll give 15​

Answers

Answer:

i dont care

Explanation:

i dont know

Why did the size of the caribou population decrease?

Answers

Answer:

The herds have been declining in recent decades due to a complicated mix of factors including hunting, disease, diminished food availability, and climate change, the report explains.

In all reptiles, birds, and mammals, the processes of excretion, water and salt balance,
and the regulation of pH in body fluids are controlled by the kidneys. This is an example
of the organism maintaining
a. reabsorption
b. homeostasis
c. insulation
d. hibernation

Answers

Should be homeostasis

if one jar of coffee costs $y, what will be the cost of four jars of coffee​

Answers

Your answer would be $4 times $y.

Hope this helps; have a great day!

$4y is how we would express 4 times y in dollars. Please let me know if you have questions.

2. Draw a vertical profile of soil and groundwater below our feet, including a small stream. Include and label all major components: groundwater table, confining layers, unconfined aquifer, confined aquifer, saturated zone, unsaturated zone, the direction of groundwater flow. Be sure to show how the stream water level connects to the groundwater table. What if you spilled a DNAPL (a dense non-aqueous phase liquid) on the soil surface? Where would it migrate to in the subsurface? What if you spilled a LNAPL (a light non-aqueous phase liquid) on the soil surface? Where would it migrate to in the subsurface?

Answers

In a vertical profile, the soil and groundwater consist of the unsaturated zone, groundwater table, and saturated zone. A DNAPL spilled on the surface would migrate downward through the unsaturated zone, accumulating at a confining layer. An LNAPL spilled on the surface would migrate horizontally through the unsaturated zone, floating on the groundwater table.

A vertical profile of soil and groundwater below our feet, including a small stream is a type of representation of soil and groundwater below the earth's surface.

It is used to show the various layers present in the earth's surface, and how groundwater flows in it. In the profile, all major components are included and labeled as follows:

1. Groundwater table: The groundwater table is the topmost layer of groundwater. It is the surface of the groundwater, and it indicates the level of water in the subsurface.

2. Confining layers: Confining layers are layers of soil that restrict the flow of water. They can be made up of clay, silt, or other types of soil.

3. Unconfined aquifer: An unconfined aquifer is a type of aquifer that is not confined by any layer of soil. It is open to the surface and is connected to the atmosphere.

4. Confined aquifer: A confined aquifer is a type of aquifer that is confined by a layer of soil. It is not open to the surface and is not connected to the atmosphere.

5. Saturated zone: The saturated zone is the area of the soil where the pores are filled with water.

6. Unsaturated zone: The unsaturated zone is the area of the soil where the pores are not filled with water.

7. The direction of groundwater flow: Groundwater flows from higher elevations to lower elevations. It flows in the direction of the groundwater table.

8. Stream water level connects to the groundwater table by capillary action. If a DNAPL (a dense non-aqueous phase liquid) is spilled on the soil surface, it would migrate to the saturated zone since it has a high density and is non-aqueous. In the subsurface, it will move down until it reaches the first confining layer.

After it reaches the confining layer, it will move laterally and can eventually reach the confined aquifer. DNAPLs are hazardous chemicals that can contaminate groundwater, so they are a significant concern.

If a LNAPL (a light non-aqueous phase liquid) is spilled on the soil surface, it would migrate to the unsaturated zone because it has low density and is non-aqueous. The LNAPL will remain in the unsaturated zone until it is completely evaporated, absorbed by the soil, or removed. Because they are not as dense as water, they pose less of a risk to groundwater contamination than DNAPLs.

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Dihybrid Punnett Square Homework 1 Susan and Tim both have red hair which is recessive to brown hair. Susan is heterozygous for dimples(dominant) and Tim has no dimples. Create a Punnett square that shows the genotypes of all the possible offspring that could result from Tim and Susan! Use R or r for hair color. Use D or d for dimples or no dimples. What is the genotypic percentage? What is the phenotypic percentage?​

Answers

Answer:

1222

Explanation:

121

Which group of fungus convert sugar to alcohol

Answers

Answer:

yeast

Explanation:

yeast are another group of fungi important for both food and beverage fermentation the process that converts sugars into alcohol and carbon dioxide

short note of all disease of
Bee farming

Answers

Answer:

American Foulbrood is a highly lethal and contagious disease of honey bees, caused by the spore-forming bacteria Bacillus larvae. The disease causes larvae to die after cells are capped. Worker bees have difficulty trying to remove the dead larvae, and often contaminate the hive with additional spores.

organize at least seven of your body's cell processes that require energy

Answers

Answer:

search up the question and you find lots of accurate results

Energy is required for a variety of vital biological and cellular functions, including ATP hydrolysis. These include active transport, Purinergic signaling, synaptic signaling, intracellular signaling, DNA and RNA synthesis, and muscular contraction.

What do you understand by cell ?

The fundamental units of all living things are cells. There are many billions of cells in a human body. They provide the body structure, absorb nutrients from meals, turn those nutrients into energy, and perform certain tasks.

Adenosine triphosphate molecules directly provide the energy needed for cellular functions (ATP). One adenosine molecule and three phosphate groups, or Pi for short, make up ATP. The chemical energy that is stored in each ATP molecule is not very large. By dissolving ATP into adenosine diphosphate (ADP) and a phosphate group, this energy may be released.

The energy process include active transport, Purinergic signaling, synaptic signaling, intracellular signaling, DNA and RNA synthesis, and muscular contraction.

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A) If a female spinach plant with green (GG) leaves is crossed (pollination and fertilization occur) with a male spinach plant with purple (gg) leaves. What are the genotypes of the offspring and what traits will they express including the probability or ratio.

Answers

Answer:

The genotype Ratio is 1. All are Gg.

The phenotype is all Green spinach

Explanation:

Punnett Square:

    G                G

    _________________

g   |   Gg         |     Gg          |

    |________|________  |

g   |    Gg        |     Gg          |

    |________|________  |

The genotype Ratio is 1. All are Gg.

The phenotype is all Green spinach

Many cellular processes are performed by cells. A typical cell and a common process are shown in the diagram below.

Which of the following is the best reason this cell is going through the process shown?
to reproduce another cell
to compete with another cell
to maintain homeostasis of the cell
to provide protection for the cell from the environment

are shown in the diagram below.

Answers

To reproduce another cell.

When digested food is absorbed into the blood vessels, it is carried to the rest of the body by the

lymph

white blood cells

lungs

plasma

blood

Answers

The plasma carries nutrients throughout the body to the cells, as well as takes waste products.

Pls help me and thank youuuu

Answers

Is between B and C but the correct answer should be B
The answers should probably be B

In a certain breed of horses, the allele for a white coat (W) is co-dominant with the allele for a brown coat (B). A white horse (WW) is crossed with a brown horse (BB)What do you predict for genotype (s) and phenotype(s) of the offspring?

Same thing with incomplete dominant

Answers

Answer:

Hope this helps have a good day <3

Explanation:

If you know the genotypes of two parents, you can predict the genotype and phenotype of their offspring. The B allele is dominant, so its phenotype is expressed, even when the b allele is present in the genotype. ... Write the second allele for the Bb horse here.

what is the difference between the way that saprotrophs and detritivores digest their food

Answers

Answer:

Externally

Explanation:

Usually, detritivores are mostly animals, while saprotrophs are mostly fungi. Furthermore, detritivores consume lumps of dead organic matter separately, while saprotrophs absorb chemically digested food. Saprotrophs digest their food externally, whereas detritivores do it internally in the digestive system.

i hope this helps! :)

The best-accepted hypothesis for the dispersal of monkeys to the New World is: Group of answer choices platyrrhines evolved from early anthropoids in Africa and rafted or island hopped across theAtlantic to South America. platyrrhines evolved from adapiforms in Asia and crossed a land bridge to the Americas. Old and New World anthropoids evolved independently from different lineages of Eocene primates in Africa and South America, respectively. transportation after human colonization.

Answers

Answer:

platyrrhines evolved from early anthropoids in Africa and rafted or island hopped across the Atlantic to South America. ( option A )

Explanation:

The best-accepted hypothesis for the dispersal of monkeys to the New World is ; platyrrhines evolved from early anthropoids in Africa and rafted or island hopped across the Atlantic to South America.

The group of answer choices are various hypothesis about the dispersal of monkeys but the best-accepted hypothesis is the first option ( Option A )

why does the male body stop producing testosterone when using anabolic steroids

Answers

Answer:

The use of anabolic steroids can raise blood levels of testosterone well above a person's normal range. As a result, the body may try to regulate testosterone levels by shutting down its own production of testosterone. In order to prevent this, people usually use anabolics in cycles of a few weeks on and then off.

Explanation:

- Eijiro <3

Define the process of germination.​

Answers

Answer:

Germination is usually the growth of a plant contained within a seed; it results in the formation of the seedling. It is also the process of reactivation of metabolic machinery of the seed resulting in the emergence of radicle and plumule.

or

Germination, the sprouting of a seed, spore, or other reproductive body, usually after a period of dormancy. The absorption of water, the passage of time, chilling, warming, oxygen availability, and light exposure may all operate in initiating the process.

or

Germination is the process by which an organism grows from a seed or similar structure. The most common example of germination is the sprouting of a seedling from a seed of an angiosperm or gymnosperm

Explanation:

brainliest pls

Which layer appears to be the least resistant to
weathering?

Answers

Answer:

A

Explanation:

A is at the top therefore would be most affected by the weathering

Which of the following amino acid changes can result from a single base change? a) Methionine to arginine. b) Histidine to glutamic acid. c) Glycine to alanine. d) Proline to alanine. e) Tyrosine to valine.

Answers

The amino acid change that can result from a single base change is : Glycine to alanine. (Option c)

A single base change in the DNA sequence, also known as a point mutation, can result in an amino acid change in the corresponding protein sequence. Among the given options, the amino acid change that can result from a single base change is:

c) Glycine to alanine.

Glycine (Gly) and alanine (Ala) are both nonpolar amino acids, and they have similar properties. They differ in the presence of a methyl group in alanine, which is absent in glycine. A single base change in the DNA sequence can lead to a substitution of one nucleotide, ultimately resulting in a change in the corresponding mRNA codon during translation. Depending on the specific codon affected, a glycine residue can be replaced by an alanine residue due to this single base change.

The other options:

a) Methionine (Met) to arginine (Arg): This change involves a substitution of a nonpolar amino acid with a positively charged amino acid. This change would typically require multiple nucleotide changes since methionine and arginine have different properties and are encoded by different codons.

b) Histidine (His) to glutamic acid (Glu): This change involves a substitution of a positively charged amino acid with a negatively charged amino acid. This change would typically require multiple nucleotide changes since histidine and glutamic acid have different properties and are encoded by different codons.

d) Proline (Pro) to alanine (Ala): This change involves a substitution of a cyclic amino acid (proline) with a nonpolar amino acid (alanine). This change would typically require multiple nucleotide changes since proline and alanine have different properties and are encoded by different codons.

e) Tyrosine (Tyr) to valine (Val): This change involves a substitution of an aromatic amino acid (tyrosine) with a nonpolar amino acid (valine). This change would typically require multiple nucleotide changes since tyrosine and valine have different properties and are encoded by different codons.

So, the only option where a single base change can lead to an amino acid change is c) Glycine to alanine.

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quick help will give brainliest​

Answers

Answer:

the correct answer is c i just tuck the text

Explanation:

C. The centromeres of sister chromatid separate

you are a researcher studying aquatic parasites at point reyes national seashore. during your studies, you come across a new animal species. after a thorough examination, you determine that the organism has bilateral symmetry, tissues, and lacks a body cavity. what kind of animal is it?

Answers

As a researcher studying aquatic parasites at Point Reyes National Seashore, after a thorough examination of an animal species with bilateral symmetry, tissues, and no body cavity, it can be concluded that it belongs to Phylum Platyhelminthes which contains flatworms. The organism belongs to the Phylum Platyhelminthes, which contains flatworms.

The phylum consists of free-living and parasitic organisms that have a simple body structure without a coelom (body cavity) and lack specialized respiratory and circulatory organs. Because the organism lacks a coelom, which is a major characteristic of higher animals like mammals and birds, it is a flatworm. The absence of a body cavity makes flatworms very thin and flattened with tissues and organs directly attached to each other. These animals are known for their parasitic lifestyles. They can live in marine, freshwater, and even damp terrestrial environments. Bilateral symmetry, which means that the animal has a left and right side that are mirror images of each other, is also a common feature of this phylum. The nervous system of flatworms consists of a ganglionated nerve cord with one or two pairs of nerve ganglia.

The flatworm's digestive system is incomplete and mouth-like structures can be found on both ends of their body. Their mode of reproduction includes sexual and asexual reproduction. Some flatworms are free-living, while others are parasites and are responsible for many diseases in humans and animals.

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true/false. make a distinction between air distribution and gas exchange in the respiratory system. identify the organs that serve as air distributors and gas exchangers.

Answers

False because air and organs savor the same

Coral reefs support more species than any other marine environment. The biodiversity in a coral reef is great, and scientists estimate that there may be another 1 to 8 million undiscovered species of organisms living in and around reefs. Reef structures protect shorelines against waves preventing the destruction of beaches and coastal property. An artificial reef is a man-made structure that mimics some of the characteristics of a natural reef. Often, old ships and even subway cars are sunk off the coastal shore to create an artificial reef environment. What is the greatest benefit an artificial reef would provide to the people living along the coast

Answers

Answer:

The artificial reef would decrease erosion of the coastline.

Explanation:

Artificial reefs are created in area where there is little uderwater topography or near established coral reefs to imitate or even substitute for natural coral reefs where they are absent or endangered due various factors which are mostly human in nature. The artificial serves to provide a habitat for marine organisms and ensure more biodiversity around the area by providing shelter from predation and surfaces for encrusting organisms such as corals and sponges to grow on. The growth of these lower level food chain organisms attract larger predator organisms thereby increasing the biodiversity in the area.

Artificial reefs are made from a variety of materials such as shipwrecks, construction debris, oil rigs, concrete, and any other man-made objects. Since reef structures protect shorelines against waves, artificial reefs would decrease the erosion of the coastline providing benefit to the people living along the coastline by preventing the destruction of beaches and coastal property,

what is the relationship between the rate of wind and the amount of abrasion?

Answers

Answer: Rocks were abraded by a sand-laden air- jet in the laboratory to examine the quantitative relationships between wind abrasion and wind velocity, quantity and grain- size of wind blown sand particles, and physical properties of the target rocks.
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a system of equations is graphed on the coordinate plane. y=6x3y=x 2 what is the solution to the system of equations? enter the coordinates of the solution in the boxes. (, ) Find the measurement of WX which of the following code will create an index named stu_marks_ind on the columns student_code and percentage_of_marks of the students table? Please answer the bottom question please (the cylinder question)! The first one has been answered already. number 1515) You want to have $3.5 million in real dollars in an account when you retire in 40 years. The nominal return on your investment is 14 percent and the inflation rate is 4.5 percent. 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Since there are more rows than columns in an 8 times 6 matrix, the rank of an 8 times 6 matrix must be equal to. Since there are 6 rows in a 6 times 8 matrix, there are a maximum of 6 pivot positions in A. Thus, there are 2 non-pivot columns. Therefore, the largest possible rank of a 6 times 8 matrix is C. The rank of A is equal to the number of columns of A. Since there are 6 columns in an 8 times 6 matrix, the largest possible rank of an 8 times 6 matrix is. Since there are 8 columns in a 6 times 8 matrix, the largest possible rank of a 6 times 8 matrix is. (a)Suppose we have preferences U(X, Y) = min [X, Y]. Graph/sketch the indifference curve through the bundle X = 10 and Y = 10. What is the utility and explain why it looks the way it does.(b) Why is the concept of Marginal Rate of Substitution not relevant with these preferences?(c) What do we mean by a composite good? What does this composite good look like with these preferences? Show and explain.(d) Suppose the consumer wanted to maximize utility subject to their budget constraint. State the consumers maximization problem and express this in words.(e) Let U(X, Y) = min [X, Y] and Px = 10, Py = 20 and income M = 1000. Find optimal X, Y, and the resulting Utility (f) Now let Px = 12. How does optimal consumption and utility change? Explain in simple terms.(g) We know that a rise in price will lower utility. Calculate the Compensating Variation that ensures the consumer is no worse off. Show and explain your work. 1. Divide 3x4 - 4x3 - 6x +17x-8 by 3x4 a) Express the result in quotient form. b) Identify any restrictions on the variable. c) Write the corresponding statement that can be used to check the divisi Explain in words the advantages and limitations of fiscal policy.Use the IS-LM framework to analyze the short-run effects of a fiscal debt reduction program. If 25.0 g of NH3 and 45.0g of O2 react in the following reaction, how many grams of NO will be formed? 4 NH3 (g) + 5 O2 (g) 4 NO (g) + 6 H2O (g) Which one of the following can be classified as a weak electrolyte? A) HBr B) CaF2 C) OBC2 D) HF E) F2 Consider the following continuous Joint PDF. f(x,y) = K. x/y^2 In 1/y + < x < y and 1 a. Sketch the region where the PDF lies. b. Find the value of the constant K that makes this a valid joint probability density function c. Find the marginal density function of Y. Solve yy' +x =3 (x^2+ y2) (Give an implicit solution; use x and y.) In 2019, the Health Survey of England estimated that 28% of Britons are obese and a further 36% are overweight. Michael is interested in understanding the effects of obesity on individuals' labour market outcomes. a. Explain four reasons why we might expect obesity to affect individuals' labour market outcomes. (8 marks) b. Michael has two friends - Vincent and Tariq. Vincent is obese and earns 30,000 a year; while Tariq has a healthy weight and earns 40,000 a year. Michael believes that the difference in earnings between Tariq and Vincent - 10,000 - is the effect of being obese on individual earnings. Do you think he is correct? Explain your answer The koyna hydroelectric project is equipped with four units of vertical shaft pelton turbines to be coupled with 7000kvA, 3 phase, 50 hertz generators. the generator are provided with 10 pairs of poles. the gross design head is 505m and the transmission efficiency of head race tunnel and penstock together is 94%. the four units together provide for a power of 260MW at efficiency of 91%. the nozzle efficiency is 98% and each turbine has four jets. take speed ratio to be 0.48 and flow coefficient to be 0.98 and nozzle diameter 25% bigger than jet diameter, estimate the; a)discharge for the turbine b)jet diameter c)nozzle tip diameter d)pitch circle diameter of the wheel e)specific speed f)number of buckets on the wheel Exercise 19-17 (Algo) Analyzing a special offer for a service company LO P3 Grand Garden is a hotel with 140 suites. Its regular suite price is $210 per night per suite. The hotel's total cost per night is $150 per suite and consists of the following. Variable cost Fixed cost Total cost per night per suite The hotel manager receives an offer to hold the local Bikers' Club meeting at the hotel in March, which is the hotel's slow season with a low occupancy rate per night. The Bikers' Club would reserve 120 suites for one night if the hotel accepts a price of $118 per night. $ 110 40 $ 150 (a) What is the contribution margin from this special offer? (b) Should the Bikers' Club offer be accepted or rejected? Contribution margin from Bikers' Club special offer: Revenues from special offer Should the Bikers' Club offer be accepted or rejected? Suppose that there are just three types of investors with the following tax rates: Individuals Corporations Institutions Dividends 35 % 20 % 0 % Capital gains 18 8 0 Individuals invest a total of $81.5 billion in stock and corporations invest $11.80 billion. The remaining stock is held by the institutions. All three groups simply seek to maximize their after-tax income. These investors can choose from three types of stock offering the following pretax payouts per share: Low Payout Medium Payout High Payout Dividends $ 8 $ 8 $ 35 Capital gains 18 8 0 These payoffs are expected to persist in perpetuity. The low-payout stocks have a total market value of $101.5 billion, the medium-payout stocks have a value of $51.5 billion, and the high-payout stocks have a value of $121.5 billion. a. Who are the marginal investors that determine the prices of the stocks? Individuals Corporations Institutions b. Suppose that this marginal group of investors requires an after-tax return of 12%. What are the prices of the low-, medium-, and high-payout stocks?(Do not round intermediate calculations. Round your answers to 2 decimal places.) Price of low-payout stock $ Price of medium-payout stock $ Price of high-payout stock $ c. Calculate the after-tax returns of the three types of stock for each investor group. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Institutions Individuals Corporations Low-payout stock % % % Medium-payout stock % % % High-payout stock % % % d. What are the dollar amounts of the three types of stock held by each investor group? (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 2 decimal places.) Institutions Individuals Corporations Low-payout stock $ $ $ Medium-payout stock $ $ $ High-payout stock $ $ $ What is the maximum height to which a motorhaving a power rating of 20. 4 watts can lift a5. 00-kilogram stone vertically in 10. 0 seconds?(1) 0. 0416 m (3) 4. 16 m(2) 0. 408 m (4) 40. 8 m which statements are true in the long run for a company operating with negative economic profit and positive accounting profit?a. Operation is not sustainable.b. The firm will most likely stay in the market.c. Operation is sustainable but not advisable.d. The firm will most likely exit the market.