What is muscle atrophy? muscle spasms resulting from too rapid progressive overloading muscle cramps arising from insufficient warm-up loss of muscle size and strength?

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

Why is it to call the calvin cycle the light independent reactions vs the dark reactions

What do all of the above organisms have in common