There are a number of ways in which the respiratory system has changed during the development of amphibians. Their respiratory system developed in such a way that they need more oxygen than they used to.
Most amphibians have lungs and therefore breathe air. Most fish have gills and absorb oxygen from the water. However, there are members of both groups who don't follow the rules. Some salamanders possess gills and some fish can breathe air.
The two main differences between the respiratory systems of amphibians and those of mammals are that amphibians can breathe through their skin (mammals cannot) and that juvenile amphibians only breathe underwater through gills (mammals breathe air through lungs throughout their lives).
Amniotes (reptiles, mammals, birds) cannot change gender without major surgery and medication. Zebras are mammals, so they cannot naturally change gender. Some types of fish and amphibians change gender when exposed to certain pollutants, and some fish and invertebrates change gender naturally.
Why does the respiratory rate change depending on age?
In the early stages of development, amphibians live in the water they breathe with gills as an adult an amphibian lives on land and uses lungs to breathe.
Marine mammals respond to temperature change in various ways. In most cases, a change in temperature will cause the mammals to change their habitat.
some can change colors
metamorphosis
A change in the form and often habits of an animal during normal development after the embryonic stage. Metamorphosis includes, in insects, the transformation of a maggot into an adult fly and a caterpillar into a butterfly and, in amphibians, the changing of a tadpole into a frog.
Medulla Oblongata
Metamorphosis is the change amphibians go throgh.I am a fourth grader just to tell you!
They become tadpoles
cause people began to hunt mammals
in the alveoli