Answer:
Aristotle first wrote about the practice of animal testing in ancient
Greece during the third century BC.
Explanation:
The whale and the bat are the most different because of the size of the hands or fins.
And the human and the cat are the most similar because they are almost identical to each other from the bottom up
You can conclude that the one that were alike were related in some type of way
A frog's lungs don't work that well, but since it's skin is so thin, oxygen and carbon dioxide can pass trough it.