I would say that B) single events or several causes working together to produce extinction in a short period is referred to as mass extinction, but I am not 100% sure.
Epithelial cells are a type of cell that lines the surfaces of your body.So the answer would be skin
Hope this helps
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This is called independent assortment
Answer;
positive feedback system
The phenomenon described above is best explained by positive feedback system.
Explanation;
-Positive feedback is the opposite of negative feedback in that it encourages a physiological process or amplifies the action of a system.
-It is a cyclic process that can continue to amplify your body's response to a stimulus until a negative feedback response takes over.
