To everyone who answered my questions about the Pacific Northwestern Tree Octopus THE ANIMAL IS FAKE! If you don't know the correct answer to things THEN DON"T ANSWER THEM!!! XD

How do you date a sample of rock that you suspect as being one of the earliest on earth

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of