Week 2: Activity #3

 

Topic Sentence: Humans are often harmed by pollution.
	Classification	Examples of Hazardous Substances
Pollution	1. Land	a. garbage b. pesticides c. heavy metals d. other chemicals
	2. Air	a. toxic gases b. solid and liquid particles (aerosols) c. other hazardous air pollutants
	3. Water	a. industrial wastes b. sewage c. chemical fertilizers d. pesticides e. wastewaters
Transitional expressions: For instance, such as, lastly, like, and, to be specific