The other molecules are triglycerides, low density lipoprotein, and high density lipoprotein.
Quite sure C is correct ;) remember that humans are also placental mammals.
Fossils are physical evidence of preexisting organisms, either plant or animal. ... Fossils of any kind are useful in "reading the rock record," meaning they help us decipher the history of the earth. They can help us determine the geologic age and environment (the paleoenvironment) in which they were deposited.
I think it would be A. Helicase
