Which statement is true about viruses? O a. Viruses can eat and metabolize food.
O b. Viruses can reproduce only using a host cell.
O c. Viruses can reproduce on their own at any time.
O d. Viruses contain DNA, so they are alive.

The model illustrates a process by which a substance is taken up by a cell

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction