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plant-like organisms that live and grow in water; they make their own organic food by the process of photosynthesis.
a thin hairlike outgrowth of an epidermal cell of a plant root that increases the surface area...
the actions of the body's immune system that work to fight infections or disease.
a viral disease caused by Lyssavirus spp that causes acute inflammation of the brain in...
water that falls to earth in any form, such as rain, snow, hail and sleet.