Parasitic red blood cell’s
To have a thing to compare your test results to. The control is not changed at all in an experiment so your other test results can be compared to it. It’s like the base level kinda
<span>Newborns of many species, especially humans, spend more time in REM sleep (Mark me as brainiest! <3)</span>
Answer:
B
Explanation:
Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient.
