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change the anti-pollution standards for its products sell its products at a more expensive price buy materials at a higher price pay more money to its workers
had been improved will be improved is improved was improved
had been improved will be improved is improved was improved
had been improved will be improved is improved was improved
steps procedures precautions programs
to describe how a company can go bankrupt to emphasize the urgent need of cleaning up the environment to stress the importance of the government’s role in preventing pollution to tell how difficult it is to keep the environment free from air-pollution
Air and water pollution. Greenhouse effects. The use of land and other natural resources. All of the above.
of, to /, to of, of of, for
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