Fact 1: Microorganisms can cause infections. Fact 2: Chlorination uses liquid chlorine bleach to kill microorganisms. Given the two facts above, which chemical added to water prevents illnesses? ?
Choose from:
1). Glucose.
2). evaporation.
3). Chlorine..
4). sugar.
5). Allergies.
6). sweating.
7). energy.
8). hydration.
Answer:
3).