Expenditures to reduce pollution in the United States

(When?)____ totalled $109 billion, including $105.4 billion on

reduction, $1.9 billion on regulation, and $1.7 billion on research and development. Twenty-nine percent of the total cost went

(Where?)______, 36 percent to water pollution, and 36 percent to

Solid waste management. In addition to its effects on the economy, health, and natural resources, pollution has social implications. Research has

shown (What?)_______. Toxic waste incinerators, chemical plants, and

solid waste dumps are often located in low-income communities (Why?).

Exercise 17. Put all types of question to the following sentenses.

Most environmental pollution is caused by human activities. 2. Nondegradable compounds can reach dangerous levels of accumulation. 3. A small fish accumulates a high concentration of the toxin. 4. This process indiscriminately kills even beneficial microorganisms. 5. Strawberry farmers in California fumigate the soil with methyl bromide to destroy organisms that may harm young strawberry plants. 6. More recently research has revealed that many chemical pollutants mimic sex hormones.

Exercise 18. Read the text. Put the words from the box into the gaps.

Bald, bodies, chemical, compound, death, eggs, emissions, environment, immediate, pipelines, runoff, areas, smokestacks, spill