What are the different sources of fresh water

What is a cordon and where is it found

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent