2. What causes the diffusion of oxygen into a plant cell?
photosynthesis
movement of molecules
active transport
osmosis
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How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.