Answer:
comparing the effects of exercise intensity
Answer: positive feedback mechanism
Explanation:the body is able to regulate it's internal environment through homeostasis.it usually involves a receptors,an intergration center and an effector.
In positive feedback,the body enhances the initial stimuli and pushes it's level out of a normal range, which is beneficial to the body at the time.this is unlike negative feedback which reduces the stimuli.
During labour,the body releases the hormone oxytocin, which speeds up and increases contractions . this increase in contraction triggers an increase in oxytocin production until the child is born.
This is an example of positive feedback mechanism
<span>Sunset, this is really similar to the question about molecular clocks you asked. The more closely related the three species are, the more similar the homologous proteins will be in each of the species.
Defining 'sequence similarity' is a little bit nuanced. It can refer either to the genetic code or the amino acid code. Because the genetic code is degenerate multiple codons code for the same amino acid - mutations in the gene don't result in mutations in the proteins when the mutated codon codes for the same amino acid as the unmutated codon.
Similarly, you can sort of think of some amino acids as being redundant. In some cases, replacement of one amino acid with another doesn't result in all that much change to the protein's structure or function. The result is, as species diverge and mutations build up, they build up preferentially in certain domains of the protein and more frequently involve replacement of one amino acid with one which is pretty much similar to it.</span>
The study of one type of evidence of evolution is called embryology, the study of embryos. An embryo is an unborn (or unhatched) animal or human young in its earliest phases. Embryos of many different kinds of animals: mammals, birds, reptiles, fish, etc. look very similar and it is often difficult to tell them apart.
