Which of the following depicts only the biotic factors of a rainforest?

frogs, birds, and trees

soil, lake, and rain

lake, fish, and insects

all of the above

What do all macromolecules have in common with each other? oa. they all are formed from the same elements. ob. they all have major roles in cell membranesoc. they all act as catalysts in the body. od. they all have peptide bonds between carbon atoms.

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 -

The structure that houses the cells genetic information.