This leads bacteria to reproduce quickly because this means a single parent cell divides into two daughter cells. For every parent cell you get two daughter cells. There are many cells in our body, and each cell can divide itself to become two more cells. As you can imagine, this is a quick way to reproduce.
Bioaccumulation is the process by which toxins enter the food web by building up in individual organisms, while biomagnification is the process by which toxins are passed from one trophic level to the next (and thereby increase in concentration) within a food web.
