Explain how both passive transport and active trans-
port are necessary for
photosynthesis to occur.

The first amino acid of a new polypeptide chain is

In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false