If distances between two towns on a map is 7cm. the map scale is 1cm: 100km. what is the actual distance on the ground between the two

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

What was darwins theory of common decent

List five ways we are indebted to phytoplankton