The Side Effects of Chemotherapy on the Body. Chemotherapy drugs are powerful enough to kill rapidly growing cancer cells, but they also can harm perfectly healthy cells, causing side effects throughout the body.
The fastest bear is the Black Bear, followed by the Brown Bear, and the Polar Bear. In short, the larger the bear the slower it is. Keep in mind that even the slowest bear can still move it out at about 30 mph. The Brown Bear can run approximately 40 mph. Bears can even run sideways; still beating the fastest human runner.
Donât run from the bear unless safety is very near and you are absolutely certain you can reach it (knowing that bears can run 35 mph). Climbing a tree is generally not recommended as an escape from an aggressive black bear, as black bears are adept climbers and may follow you up a tree (Fig. 7).