Answer:
Convergent evolution; even though these animals are all different classes, they have developed similar features due to the environments they live in. We call these analogous features and the means by which they develop convergent evolution.
What do you mean by responsible? Do you want to know the genetics behind it, what the surface markers do, or why they are metically important? I think I can help.
It should be an igneous rock because it formed by the volcanoes lava cooling down
Alcohol,nicotine, and caffeine.
