Diffusion is defined as the movement of particles from higher concentration area to lower concentration areas. It continues until the concentration of substances is uniform throughout.
So, the best possible answer to this question is option A - when you inhale oxygen into your lungs,it is sent through your bloodstream to the rest of your body.
Commentulism: one organism has benifit, other no affect.
Mutualism: both organisms have benifit.
It has no effect. Density of a substance is the same no matter the size or shape of the sample.
Hypertension can damage the blood vessels in the kidneys causing them not to function properly which then causes the kidneys to stop removing the waste and extra fluids.
