Answer:
Ice caps and glaciers - 69%
Groundwater - 30%
Surface water - less than 1 %
Explanation:
Fresh water is a type of water, found in nature, in which there is no salt. It is water suitable for consumption (provided it is treated) for humans and animals. Fresh water is also used in agriculture. Only about 2.5% of the water found on our planet is sweet. It is mainly found in polar caps and glaciers, groundwater, surface water.
With the growth of the world population, fresh water has become increasingly scarce. Overuse, waste and water pollution are the main problems related to fresh water today.
As it is a precious and scarce mineral resource, society must be aware that, in order not to run out of water in the near future, it is necessary to avoid waste, use it rationally and do not pollute rivers, lakes and water sources.
Answer:
C).ice sheets, water vapor, rivers
:)
Explanation:
There are several mechanisms through which reproductive isolation occurs. Which situation is an example of behavioral isolation?
A.
Mules, the offspring of a male donkey and a female horse, are unable to reproduce because they are sterile.
B.
The reproductive organs of snails only properly align when the male and female belong to the same species.
C.
Males of different, closely related species of fireflies signal for mates by flashing different light sequences.
D.
Red and purple sea urchins cannot reproduce with one another because the sperm and egg cannot fuse.
What was available to humans to make their tools before metallurgy?
A: Humans used no tools.
B: Humans used their bare hands for tools.
C: Humans used wood, stone, and bones for tools.
D: Humans used natural metals they found on the ground.
Answer:
C
Explanation:
Before the advent of metallurgy, humans used wood, stone, and bones for tools.
What is metallurgy?It is a branch of science that deals with the properties of metals as well as their application in building useful metallic tools.
Metallurgy has helped man to develop several useful tools and equipment which are vital to the existence of man.
Before the advancement of technology, man use improvised tools made from wood, stones, and bones.
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What subatomic particle changes the identity (element name) of an atom?
Answer:
♡Hi again, Susan! ♡
-- protons is your answer.
~Clara ✧･ﾟ: *
Explanation:
While playing tennis you need to know where your limbs are located so you can move them into the right positions to run or swing your racket. Which of the following senses provides this information?
Answer:
The correct would be - Kinesthesis.
Explanation:
Kinesthesis is the study of the body movement and learning where is your body parts and so can you can move or find the required changes to make to the body and its part. It does not depend on the senses like hearing, vision, or others.
Kinesthesis involved the sensory receptors present in joints, muscles or other body parts involves in making movements and allows to make and understand physical activities. For example, sensing pr knowing where is the body limbs to move to hit or swing the racket or run.
In an organ transplant, a doctor transfers a donated organ from a recently deceased person to a live patient. One of the consequences is that the patient's immune system - the system that protects against diseases and pathogens in the body will reject the new organs. Explain why this consequence isn't a concern with organs grown from human cells
Answer:
The scientist would use the patient’s own stem cells to grow the organ. Because the cells are from the patient’s own body, the immune system won’t perceive the new organ to be a foreign body.
Explanation:
Answer:
The scientist would use the patient’s own stem cells to grow the organ. Because the cells are from the patient’s own body, the immune system won’t perceive the new organ to be a foreign body.
Explanation:
The scientist would use the patient’s own stem cells to grow the organ. if it uses cells from someone elses body the immune system wont work the way it should because its from a foreign body but if it uses its own cells then it'll work and won't see the cells from a foreign body
Translate the mRNA into the corresponding amino acids.
mRNA Molecule:
AUGAACCAUUCAGUAUGG
Amino Acid( fill) :
The corresponding amino acids would be
UACUUGGCAAGUCAUACC
The given mRNA sequence can be translated into the corresponding amino acid sequence as Methionine-Aspargine-Histidine-Serine-Valine-Tryptophan.
RNA ribosome translation is the process by which mRNA is translated into proteins. A ribosome is a cellular structure composed of proteins and rRNA. It is the site of translation, where codon codons are matched to amino acids and peptide bonds are formed between amino acids.
All mRNAs are degraded at a specific rate once they enter the cell’s cytoplasm. Some mRNAs are translated, some are stored for further translation, and some mRNAs are temporarily translational repressed.
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In what process does adaptation lead to the creation of a new species? a. Mutation c. Speciation b. Adaptation d. Genetics
Answer:
This eventual process of speciation by natural selection is illustrated by a sketch ... The integration of genetics with models of natural selection shed tremendous ... processes which cause adaptation within species also tend to create new species. ... Darwin, C. On The Origin of Species by Means of Natural Selection,
Explanation:
Which of the following is NOT a quality of a good index fossil?
1. They are only found in one location on the earth
2. They are easy to recognize and look different than other fossils
3. They have a limited time period that they were located on the earth
4. They can be used to help date layers of rocks around the world
Answer:
1.
Explanation:
That is not true! Fossils are found in from germany to australia (all around the world)!
The study of fossils is called paleontology. On earth, there are different types of fossils present on the earth. For example Body Fossils, Molecular Fossils, Trace Fossils, Carbon Fossils, Pseudofossils.
The correct answer is option A.
What are fossils?A fossil is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood, oil, coal, and DNA remnantsAccording to the question, all the options are relatable to the good fossils index except option A.
The fossils can be found anywhere on the earth, not at a specific location.
Hence the correct answer is option A that is They are only found in one location on the earth.
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What is a T-cell receptor?
Answer:
The T-cell receptor (TCR) is a protein complex found on the surface of T cells, or T lymphocytes,[1] that is responsible for recognizing fragments of antigen as peptides bound to major histocompatibility complex (MHC) molecules. The binding between TCR and antigen peptides is of relatively low affinity and is degenerate: that is, many TCRs recognize the same antigen peptide and many antigen peptides are recognized by the same TCR.
Explanation:
10. In the figure of the U-tube below, side "A" is pure water and side "B" is a 10% starch solution. The starch can not pass
through the membrane because it is too large, only the water moves across the membrane. Explain what has
happened in the before and after picture below. Why does this happen?
Answer:
All of the water has moved through the membrane moving the solution on the other side higher.
Explanation:
I really hope this is right and i helped you out!
Starch cannot pass through membrane because it is too large molecules. Cell membrane is a semipermeable membrane. It cannot allow bigger molecules to pass. It helps only to pass small molecules.
What is cell membrane?A cell membrane, often referred to as a plasma membrane, is present in every cell and serves as a barrier between the interior of the cell and the outside world.
The cell membrane is a lipid bilayer that is semipermeable. The cell membrane regulates the flow of substances into and out of the cell.
The cell membrane, commonly referred to as the plasma membrane, serves as the body of a cell. It also keeps the environment inside the cell constant, and that membrane has many functions.
Therefore, Starch cannot pass through membrane because it is too large molecules. Cell membrane is a semipermeable membrane. It cannot allow bigger molecules to pass. It helps only to pass small molecules.
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Which of the following problems is more likely to cause disease during aquaculture farming? (3 points)
-Aquaculture wastewater cleared by ocean currents
-Large density of fish in a small holding area
-Non-native fish enter aquaculture ponds from a river
-Increase in fish production from aquaculture farming
Answer: b, large density of fish in a small holding area
Explanation: I just finished the assignment and it was correct.
It is the Large density of fish in a small holding area that is when the production is increased to a greater number. The correct answer is option B.
What are the common diseases that may cause effects in fish ?These could be pathogenic invasions on their bodies. It can be them not feeding as well.
Risks that include amplification and the transmission of the disease that from the farmed to the wild fish along then the introduction of the non native kind of the pathogens along with the parasites in case when the fish are transported. Fish diseases takes place naturally in wild but effects often can go on unnoticed as the dead fish suddenly becomes prey.
Signs of the fish disease mainly include the abnormalities and symptoms as fish is not feeding that are having ulcers on body or the cloudy eyes. Most common indicators of the disease that are fish coming to ]surface and later gasping for the oxygen even higher than the usual levels of the sickness even death in aquaculture system.
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what is the difference between cell membrane and visking tubing
Explanation:
cell membrane- is a semipermeable tissue that selectively allows the movement of materials in and out of a cell while a visking tubing is a artificial cee membrane
Answer:
Explanation:
Cell membrane is a semi permeable wall found in living cells . It is separate the inside cell from the the outside environment. This allow the movement of substances in and out of the cell. It allow diffusion of gases in and outside the cell.
Visking tubing is made of regenerated cellulose which look aliitle bit similar sellotape when it is dry. It is an artificial membrane that is similar to the cell membrane. It is a selectively permeable membrane with small pores that allow the movement of smaller molecules in through them.
I really need help on this.
1. If you travel for three hours at a speed of 30 km/h, how far will you go?
2. Liz is driving to Beaumont, which is 175 miles east from her current position. She plans on being in Beaumont in 2 hours. If she makes it what will her average velocity have been?
3. How much time will it take for a bug to travel 5 meters across the floor if it is traveling at 1 m/s?
Answer:
245 miles
Explanation:
I have no explanation.
what do both glycolysis and fermentation have in common?
A. the can occur in the absence of oxygen
B. they produce either lactic acid or ethyl alcohol
C. they involve a serious of reactions that progress in a circular fashion
D. they combine hydrogen with oxygen to produce water
Answer:
Ambas se realizan en ausencia de oxigeno
Respuesta A
Explanation:
La fermentación láctica transforma el piruvato en lactato
Durante la glucolisis una molecula de glucosa se convierte en 2 moleculas de piruvato y se obtienen 2 moleculas de ATP y 2 de NADH netas.
20. Describe the parts of a nucleotide.
A nucleotide is an organic molecule that is the building block of DNA and RNA. ... A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine. RNA contains uracil, instead of thymine.
Hopefully this helped! :D
-LavenderVye
Answer:
pls mark me brainliest. the answer
Explanation:
A nucleotide is an organic molecule that is the building block of DNA and RNA. A nucleotide is made up of three parts: a phosphate group, a 5-carbon sugar, and a nitrogenous base. The four nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine. RNA contains uracil, instead of thymine.
27. Which three planets were not known to ancient people?
a. Saturn, Jupiter, and Pluto u
b. Jupiter, Uranus, and Neptune
c. Uranus, Neptune, and Pluto
d. Mercury, Venus, and Saturn
Answer:
C. Uranus, Neptune, and Pluto
:)
Which of the following is not a potential result of a bottleneck event?
a. an increase in potential mates
b. a decrease in genetic diversity
an increase in inbreeding
d. an increased chance of extinction
C.
Answer:
A. An increase in potential mates
Explanation:
An increase in potential mates would not be a potential result of a bottleneck event because it would actually increase the population rather than kill them off.
HAVE A GOOD DAY!!!!
Event an increase in potential mates is not potential result of a bottleneck.
What is the bottleneck effect for example?The bottleneck effect is an extreme example of genetic drift that occurs when the size of a population is severely reduced.
Events like natural disasters (earthquakes, floods, fires) can decimate a population, killing most individuals and leaving behind a small, random assortment of survivors.
Thus, option "A" is correct.
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please help giving brainly
Answer:
D
Explanation:
because it is transporting toxic waste out and nutrients in and protecting everything inside. Have a great day hope its right and can i have brainly?
Please take some time to help me really quick :)
Answer:
glycolysis
Explanation:
pls help me pls idk how to do this
Answer:
1. precipitation
2.condensation
3.precipitation
4.precipitation
5.precipitation
6.evaporation
7.evaporation
8.evaporation
(left to right each row)
Explanation:
precipitation is when something falls from somewhere (hail, snow etc)
condensation is when a gas (usually steam) turns into a liquid
evaporation is when a liquid turns gas.
The characteristics of all organisms and viruses are determined by the instructions carried in
Answer:
DNA
Explanation:
maybe... BUT PROBABLY YESS
Answer:
nucleic acids
Explanation:
plz don't just take my pons help me if u take my ponts i will report u
Answer: how am I supposed to answer this.
plant life cycle. animal life cycle.
flower larva, pupa, egg, and spore
fruit
seed
Explanation:
Helps me! Also I still have an hr to do this I have 10 questions left ouch!will give brainliest!
Answer:
b or c for sure
Explanation:
Frogs live in pools of water that form inside large flowers in rain forest canopies. The flowers absorb nutrients from the frogs’ wastes. Which type of relationship is this?
Answer:
Mutual
Explanation:
frogs provide food for the pond or whatever and the pond stays fresh so the frogs can live their
Answer:
Mutualism
Explanation:
AP3X
there are five different types of nucleotide bases found in living things. Which is an accurate comparison of the bases found in birds and the bases foubd in flowers?
Answer:
Uracil
Thymine
Guanine
Adenine
Cytosine
birds and flowers have different Arrangements of the bases
Explanation:
hope this helps :]
Answer:
A. Birds and flowers have different arrangements of the bases.
Explanation:
Help me pleaseeeee!!!
How are photosynthesis and respiration similar?
Answer:
Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water
Explanation:
Hope it helps:)
name two types of cell that can go through the cell cycle an infinite amount of times
Answer:
red blood cells and nerve cells
Explanation:
The Hayflick Limit is a concept that helps to explain the mechanisms behind cellular aging. The concept states that a normal human cell can only replicate and divide forty to sixty times before it cannot divide anymore, and will break down by programmed cell death or apoptosis
this is for further explanation
In words please describe what happens during photosynthesis, include these terms in your description: oxygen, carbon dioxide, photon, glucose, water, chloroplast, thylakoid, xylem, stoma, chlorophyll.
How is cancer spread through the body? Check all that apply.
through the nervous system
through the blood
through touching organs and tissue
Answer:
2
Explanation:
Answer:
Through the blood
Through organs and tissue
Explanation: