How were vaccines first discovered?

In this case, the statement that people who exercise for an hour may have lower cholesterol levels is .

What is the inability of an individual or a society to achieve a minimum standard of living known as ?

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