Animals with a three-chambered heart would include Amphibians.
- Amphibians have three-chambered which comprises of two Atria and one ventricle. Examples of Amphibians include Frog, Toads, Salamanders.
- In Amphibians heart blood from the single ventricle travels to the lungs, skin, and body, where it is oxygenated. Before being pumped out of the heart, deoxygenated and oxygenated blood are mixed in the ventricle.
- This is because the Amphibians have low rate of metabolism and thus requires less oxygen for their metabolism.
- As a result heart's load to deliver oxygenated blood to body is lowered.
Thus, from the above pointers we can conclude that only Amphibians from the option have three-chambered heart.
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DNA telomerase adds a tail to the DNA strand at the end of replication. Thus, the correct option is C.
<h3>What is DNA replication?</h3>
DNA replication may be defined as a biological process in which the genome's DNA is duplicated in cells. It is completed in three steps, i.e. initiation, elongation, and termination.
DNA telomerase is an essential enzyme in DNA replication that augments the ends by duplicating the RNA template and extending one end of the chromosome.
Therefore, the correct option for this question is C.
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The nucleus is the cell's control center
B) over production. Frogs lay thousands of eggs because some die, therefor, the frog needs to produce more.
I think the answer would be C) There is a problem with overfishing. Ban fishing for large fish so their size and population can recover, but allow the fisherman to take smaller fish.
banning fishing all together or ignoring the problem would definitely not work and bringing in a new species could disrupt the ecosystem and cause more of an issue.
