Athletes are often concerned with the question of how much protein they need in their diets because of the requirement of growing muscles for protein. Just as
muscles need the basic building block of protein, protein itself has basic building
blocks also. Proteins are large macromolecules composed of ---
a. Sugars
b. Nucleic acids
C. Amino acids
d. Fatty acids

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