I think the question needs to choose one from the last four lines. They are distantly related so their development is similar. They have different genetic materials. But they have similar structure of body. So they have similar embryo. And they are both vertebrate.
-They are distantly related, so their development is similar.
Explanation;
-Comparative embryology is the branch of embryology that compares and contrasts embryos of different species. It is used to show how all animals are related. Many things are compared (such as whether or not the organism has a notochord or gill arches).
-Embryology proves the modern theory of evolution by the similar structures found in embryos. The greater the similarity in structure, the more closely related the species are and the more recent their common ancestor is.
The answer, though i'm not quite sure' should be sulphate aerosols, though i think that is actually what the clouds are made out of. So the answer might be instead just stratospheric ash clouds
This is an example of adaptation. by hiding in the plain sight,they not only avoide the enemy that might be looking to eat them,but also stay undetected to their own preys. that way they can hunt without being sighted. they adapt to the conditions around them and make the best use of it.
You didn't provide us with any statements regarding animal blubber but the reason why mammals that live in the arctic ocean have it is because it helps and keeps them 'warm' - it's a strong insulating factor.
