Biological diversity is the variety of species in a given area. If a new species is added there are more species and therefore greater biological diversity and if one goes extinct there are less species and therefore less biological diversity.
I believe the answer is B. <span>The antibodies on B cells bind to the antigens on the pathogen's surface.
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There are no answer choices, but I know the mitochondria create energy for the cell.
Carbon dioxide is an example of a Greenhouse gas transported by the cardiovascular system to excretory organs and tissues
