the trophic pyramid is the reason
what the trophic pyramid is: Trophic pyramid, also called an energy pyramid, showing the progression of food energy. The pyramid base contains producers, organisms that make their own food from inorganic substances. All other organisms in the pyramid are consumers
- predators get little energy from the prey they eat so they must consume multiple prey
It is more difficult for top carnivores to obtain sufficient energy resources than it is for animals lower on the food chain because the higher trophic levels have less energy than the lower ones.
The trophic levels of food chainThe food chain is defined as a feeding pathway that consists of similar organisms that are placed in the same trophic levels.
Trophic levels in a food chain are those levels that is occupied by a group of organisms that have a similar feeding mode.
The plants which are the producers are at the lower trophic level while the carnivores are at the higher trophic levels.
The carnivores eats meat from other animals but not plant or plant products which obtain direct energy from sunlight.
Therefore, It is more difficult for top carnivores to obtain sufficient energy resources than it is for animals lower on the food chain because the higher trophic levels have less energy than the lower ones.
Learn more about food chain here:
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how the cardiovascular, respiratory and digestive systems work together to provide cells with the raw materials they need to ensure healthy cell function
Explanation:
The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
A researcher is curious if Bt resistant bollworms are susceptible to an insecticide called DDT. Bollworms susceptible to Bt have genotype RR or Rr, whereas those resistant to Bt have genotype rr. Bollworms susceptible to DDT have genotype tt, whereas bollworms resistant to DDT have genotypes Tt or TT. In an effort to better understand how these two genes are inherited, the researcher crosses an RR tt bollworm with an rr TT bollworm to produce the F1 generation. Then, the researcher crosses the F1 generation to produce an F2 generation. What proportion of the F2 generation is resistant to both Bt and DDT
Answer:
The correct answer is - 3/16 or 18.75% portion will be resistant to both Bt and DDT.
Explanation:
It is given that bollworms that are susceptible to Bt are represented by either RR or Rr and resistance one are shown by rr genotype and bollworms that are resistant to DDT are represent TT or Tt genotype and susceptible to DDT have tt genotype.
Cross: RR tt with rr TT
Gametes: Rt and rT
F1 cross:
RT
rT RrTt ( susceptible Bt and resistant DDT)
F1 Cross with F1
Gametes: RT, Rt, rT and rt
cross:
RT Rt rT rt
RT RRTT RRTt RrTT RrTt
Rt RRTt RRtt RrTt RrTt
rT RrTT RrTt rrTt rrTt
rt RrTt Rrtt rrTt rrtt
The bold genotypes are the three out of 16 that are resistant to both DDT and Bt.
Non vascular plants are quite commin in the forests along the coast of Norther California but are relatively rare in the ecosystems around Davis in the Central Valley. What aspects of the life cycle of these plants make it difficult for them to reproduce on our area
Answer:
The Central Valley of northern California is a region where there is little water supply, while nonvascular plants cannot efficiently store water and they have primitive traits that are dependent on water for reproduction.
Explanation:
The Central Valley of northern California is characterized to have little natural precipitation/snowmelt during the dry summer months. In addition, California's climate also has extended periods of drought. On the other hand, non-vascular plants such as mosses and liverworts, are a type of plant that lacks vascular tissues (xylem and phloem), and they also lack true roots, stems, or leaves. These plants cannot efficiently absorb and store water (which fundamental for survival), and thereby the success of these plants in establishing and reproducing in the ecosystems of the Central Valley is limited to their physiological tolerance to desiccation. Moreover, non-vascular plants may also exhibit primitive traits related to their reproductive cycle (e.g., a flagellated sperm) that are dependent on water for reproduction.
Explain the role of insulin in the homeostatic regulation of blood glucose levels
Answer:
Insulin helps the cells absorb glucose, reducing blood sugar and providing the cells with glucose for energy. When blood sugar levels are too low, the pancreas releases glucagon. Glucagon instructs the liver to release stored glucose, which causes blood sugar to rise.
Hope this helps!
3 reasons why nuclear fusion energy could save the world from climate disaster
Answer:
-Its hydrogen-like fuel is available in virtually limitless quantities
-it produces no greenhouse gases
- no long-term radioactive waste and carries no risk of meltdown
A cross between a pink 4 o'clock plant and a pink 4 o'clock plant results in a
ratio of 1 Red: 2 Pink: 1 White. What type of inheritance pattern is represented
here?
Answer and Explanation:
Red four o clocks are h/o/m/o/z/y/g/o/u/s RR.
White four o clocks are h/o/m/o/z/y/g/o/u/s WW.
R is not dominant to W and W is not dominant to R. This means that there is an incomplete dominance (or semi-dominance), where the phenotypes will mix and the Dominant alleles doesn't mask the affect of the Recessive alleles.
Pink four o clocks are h/e/t/e/r/o/z/y/g/o/u/s RW.
#teamtrees #PAW (Plant And Water)
Answer: Incomplete dominance
Explanation:
Pink is the third phenotype. The red allele and the white allele do not mask each other. The third phenotype is between the two traits.
10. A molecule that has more
is known as a cation.
O A. protons than electrons
O B. electrons than neutrons
C. electrons than protons
O D. protons than neutrons
What type of mutation causes down syndrome? (point, frameshift, deletion, insertion, etc.) -- Why is it categorized as this type of mutation?
Trisomy 21: About 95% of people with Down syndrome have Trisomy 21. With this type of Down syndrome, each cell in the body has 3 separate copies of chromosome 21 instead of the usual 2 copies. Translocation Down syndrome: This type accounts for a small percentage of people with Down syndrome (about 3%).
cdc
А what
is an opening in Earth's crust that leads to a pool of molten rock
beneath the crust.
O landslide
O earthquake
volcano
flood
Answer:
volcano flood
Explanation:
it's right I took the test
The “great dying,” which saw 96% of all species extinct, was partially caused by(1 point)
an asteroid impact.
lower levels of carbon dioxide in the air.
bacteria producing large amounts of toxic methane.
algae consuming too much oxygen from the ocean.
The “great dying,” which saw 96% of all species extinct, was partially caused by an asteroid impact. So, the correct option is A.
What do you mean by Species?Species may be defined as a group of organisms that can reproduce with one another in nature and produce fertile offspring.
An asteroid impact threatens the whole biodiversity to a large extent. It leads to the destruction of almost all life forms living on the earth's surface.
Therefore, the “great dying,” which saw 96% of all species extinct, was partially caused by an asteroid impact.
To learn more about Species extinction, refer to the link:
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PLEASE ANSWER ALL
question 21
An animal that only eats the flesh of another animal is called a
A. producer
B. herbivore
C. carnivore
D. omnivore
______________________
question 22
Which of the following statements is true about matter and energy:
A. matter is not recycled, energy is not recycled
B. matter is recycled, energy is not recycled
C. both matter and energy are recycled
D. neither matter nor energy are recycled
______________________
question 23
On what trophic level would you find organisms that use the suns energy directly to make their own food?
A. 1
B. 2
C. 3
D. 4
_______________________
question 24
Which of the following is an abiotic factor in an ecosystem?
A. bird
B. tree
C. rock
D. deer
______________________
question 25
Mushrooms and other fungi are responsible for breaking down dead organic matter. In the ecosystem, they are called:
A. producers
B. comsumers
C. decomposers
D. scavengers
Which level of organization involves an organism’s use of the mouth, saliva, teeth, stomach, intestines, liver, and pancreas to break down food?
Select one:
Organ.
Cell.
Organ system.
Tissue.
Answer:
The organ system
Explanation:
All those things you mentioned are part of the organ system, they work together.
Which one of these does not add CO2 to the atmosphere?
Answer:
Planting trees, CARBON CYCLE, and cooking with gas do not add Carbon dioxide to the atmosphere.
Explanation:
The atmosphere naturally breathes or decomposes carbon dioxide rocks, whereas forest fire takes place and volcanoes erupt.
The atmosphere is naturally decomposed. Human activities like fossil fuel and forest burning, and cement production, also add carbon dioxide to the atmosphere.
Can anyone please help me write my research paper on the use of vaccines please ?
An atom with an equal number of electrons and protons has no _____
An atom with an equal number of electrons and protons has no charge.
Flower color in the garden pea is due to two interacting genes, A and B. If either gene is recessive (aaB_, A_bb, or aabb) then the phenotype is white. A dominant allele must be present at both genes for flower color to be purple. After a testcross of an individual with a genotype of AaBb, what proportion of the progeny will have purple flowers
Answer:
4/16 = 1/4 = 25% of the progeny is expected to be purple (AaBb)
Explanation:
Available data:
Flower color in the garden pea is due to two interacting genes, A and BaaB_, A_bb, or aabb ⇒ white flower A dominant allele must be present at both genes for flower color to be purpleAABB, AaBb ⇒ purple flowerCross:
Parentals) AaBb x aabb
Gametes) AB, Ab, aB, ab
ab, ab, ab, ab
Punnett square) AB Ab aB ab
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
ab AaBb Aabb aaBb aabb
F1) Genotype:
4/16 = 1/4 = 25% of the porgeny is exected to be AaBb4/16 = 1/4 = 25% of the porgeny is exected to be Aabb4/16 = 1/4 = 25% of the porgeny is exected to be aaBb4/16 = 1/4 = 25% of the porgeny is exected to be aabbPhenotype
12/16 = 3/4 = 75% of the progeny is expected to be white(Aabb + aaBb + aabb)4/16 = 1/4 = 25% of the progeny is expected to be purple (AaBb)A species of reef fish,living in ideal conditions,has a new generation of offspring every three months. In the new generation,approximately 200 new fish are added to the population of 10,000 fish.
Answer:
.02
Explanation:
Ángel es un cerdo??
a) Sí
b) Obvio que sí
c)n op orque si es el el uqe no tiene pecho
Help I’ll give you brainilist.
The initial release of sulfur dioxide and nitrogen oxides creates BLANK pollution.
Answers To Fill In BLANK: Air, Ground, Noise, Light, Water.
These compounds chemically react to create acid rain which falls back to Earth, polluting both BLANK. It can even cycle back to the atmosphere through evaporation.
Answers To Fill In BLANK: Ground and Noise, Noise and Light, Light and Water, Water and Ground, Air and Light.
Answer:
The initial release of sulfur dioxide and nitrogen oxides creates water pollution.
These compounds chemically react to create acid rain which falls back to Earth, polluting both Water and Ground. It can even cycle back to the atmosphere through evaporation.
Pls help me awnser these questions guys
Answer:
I cant really see the questions....
Explanation:
A particular region is experiencing a viral epidemic. Which of the following would increase the likelihood of the epidemic becoming a pandemic?
A.A vaccine is developed that prevents individuals from being infected
B. Neighboring populations have little to no immunity to the disease.
C.The infection can be spread only by direct contact from one person to another
D.The region is remote and experiences little to no tourism.
Will give brainliest
In the atmosphere pool, in which molecule is the carbon found
For the human population to increase in size, what must exceed the death rate?
birth rate
mortality
limiting factors
carrying capacity
Answer:
carrying capicity
Explanation:
the carrying capacity is the amount of species or organisms that can live in a given environment without altercations. So the carryong capicity would have to increase so that more organisms can occupy the given space.
Answer: Birth Rate
Explanation:
How can you apply this approach to the classification of living things?
Answer:
Living things are classified into groups that start out large and become more specific in a system of classification called taxonomy. Scientists classify living things at eight different levels: domain, kingdom, phylum, class, order, family, genus, and species.
Explanation:
Hope this helps you
Which scientist devised tests that helped confirm that bacteria and other microorganisms cause a variety of diseases?
Robert Koch
Anton van Leeuwenhoek
Louis Pasteur
Alexander Fleming
Answer:
Alexander fleming
Explanation:
but I am not very clear
What causes low pressure? What causes high pressure?
Answer:
What causes low blood pressure?
Common causes of low blood pressure include a reduced volume of blood, heart disease, and medications. The cause of low blood pressure can be determined with blood tests, radiologic studies, and cardiac testing to look for heart failure and arrhythmias
Explanation:
What triggers high blood pressure?
Common factors that can lead to high blood pressure include: A diet high in salt, fat , and/or cholesterol . Chronic conditions such as kidney and hormone problems, diabetes, and high cholesterol. Family history, especially if your parents or other close relatives have high blood pressure
Which of the following represents an abiotic factor?
O Bacteria
O Protist
O Plants
Wind
Answer:
Last one. Wind, because it is non-living which is basically what abiotic is.
Why are members of the Kingdom Plantae important to members of other kingdoms?
Answer:
C
Explanation:
Plants have the unique ability of photosynthesis. this gives off oxygen to all other organisms
g There are three alleles at a gene determining eye color in a population of wild cats, the B allele (brown eyes) is dominant to both the G allele (green eyes) and the Y allele (yellow eyes). The G allele is dominant to the Y allele. In a population of 1000, there are 100 yellow-eyed cats, 400 green-eyed cats, and 500 brown-eyed cats. What is the expected frequency of the Y allele
Answer:
the expected frequency of the Y allele = recessive allelic frequency = 0.316 ≅ 0.32
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
3 Full sentences,
To what extent can we reverse the destruction of the natural world?
Answer:
Using too much water from lakes and rivers can affect animals’ habitat. Conserve this resource by taking five minute showers, turning off the faucet when you brush your teeth, and bugging your parents to fix leaky pipes.
Explanation: