Question 1
We are told that every surface we touch is teeming with bacteria, and bacteria are found in the pools we swim in, the water we wash with, and on the hands of friends. Why are we not inundated with bacterial infections on our skin?
Question 2
The temperature yesterday was an uncomfortable 98°F. You unwisely chose to play tennis at noon, counting on your body's internal defenses to protect you against heat exhaustion. How did your body respond to this distress?