Answer:2. Flooding and 4 run off
Explanation:Watershed areas are prone to flooding. They also cause a lot of runoff
<span>Proliferation of lymphocytes occurs immediately after activation, as well as the encounter of antigen. First, these antigen are bound, after which activation begins. Activation immediately leads to proliferation, as well as differentiation. Proliferation is an increase in the number of something, in this case, in the number of lymphocytes, or white blood cells. </span>
An environmental scientist might study the effect of soil pollution on plant growth. This is true.
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To produce proteins for the rest of the cell to function.
