Barry is a vegan. his diet does not include foods that contain preformed vitamin a, and he does not take any vitamin a supplements.

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

The sea slug that considered to be a photosyntheesizing animal