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is the supply of materials, in the form of food, required by organisms and cells to stay alive.
the clearing of large areas of natural forest, mainly to free up land for agriculture and or...
a group of parasitic protozoa. There are several species of plasmodium that cause malaria in...
the area that occurs between the high water and low water marks. It is exposed to the air at low...
the structure that separates the right ventricle from the pulmonary artery. It prevents the...