There are some possible answers which all mean the same thing:
- Produce fertile offspring
- Produce offspring
- Reproduce
→ Only individuals of a same species (sometimes genus) can reproduce because in order to reproduce animals need to have a similar genetic code, and there is now code more similar than the one of individuals of their own species.
Hope it helped,
BioTeacher101
Answer:
Melanin
Explanation:
Melanin is the name of the pigment in skin
Charles Darwin predicted that tetrapods evolved from... to basically sum it up into one word. fish.