Match the indoor air pollutant with its source.

What is one agency in the U.S. that enforces the Endangered Species Act of 1973?

Unsustainable agriculture in the U.S. was responsible for the Dust Bowl in the 1930s.

An ________________ species is, based on current trends, likely to become extinct in the foreseeable future.

What kinds (not names) of animals are impacted the most by global warming? Explain your answer.

The risk that causes the greatest numbers of death per year is poverty. Why?

A farmer sprays pesticides on his fields of crops. Considering the process of biomagnification, which species in the food chain below would have the greatest concentration of pesticide in its body?   

What has created this fault line?

What are two of the most important greenhouse gases? Name one source of emissions for each.

Which infectious disease is the leading cause of death in the world?