Question

evolution organs........... .​

Answer 1

Answer:

Our research suggests that new organs evolved by repurposing existing body parts. Over evolutionary time, organs can evolve new structures and new functions that increase the fitness or reproductive success of the animal. These changes result from genetic alterations that we can identify by comparing living animals.

Answer 2

Answer:

skin

Explanation:

IN THE evolution of organs, skin came first. The discovery that even sponges have a proto-skin shows that the separation of insides from outsides in multicellular animals was key to their evolution.