Blue aaa is the anwser because
True and can u answer my question please
Answer:
Ecologists and paleontologists say that Earth is now experiencing another mass extinction. One-quarter of all mammals are endangered. But unlike some past extinctions this one is not caused by a single chance event such as an asteroid impact.
Explanation:
The plesiosaur flipper is convergent with other flipper forms becuase even though they don't share the same evolutionary path, in other words, they don't have a common ancestor with flippers, different animals reached to a simmilar structure with the same function that is locomotion in water.