What characteristic do all algae share?
a. they are autotrophs.
b. they are unicellular.
c. they are multicellular.
d. they live in colonies.

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

Explain the causes and effect of damage to the genetic code.

Which star has the highest apparent magnitude?