Which term means using less material?

Which of the following terms is the activity of growing crops and raising farm animals?

Which of the following is a substance that makes chemical reactions take place faster?

The individuals of one species that occupy a specific area are called ___.

How has the human population on Earth changed during the last 50 years?

Which of the following is an example of hazardous waste?

Which term describes pollution from industrial outfalls or ditches?

What is the largest source of water quality issues in the United States?

What ingredient in fertilizers can cause an overgrowth of algae?

Conserving water may help reduce water pollution by ___.

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