Chapter 21 Environmental Science

was a biologist with the U.S. Fish & Wildlife Service who raised awareness of toxic pesticides with her 1962 book, Silver Spring

• Aldo Leopold

• Rachel Carson

• reduce, reuse, and

  recycle

• Garrett Hardin

author of “The Tragedy of the Commons”

• Aldo Leopold

• Rachel Carson

• Garrett Hardin

• voting

Early environmental leaders were all

• trained scientists

• Americans

• politicians

• concerned about land and species preservation.

an action that a citizen can take to elect

officials who share the person’s environmental

concerns

• Rachel Carson

• reduce, reuse, and

  recycle

• Garrett Hardin

• voting

Paul Ehrlich warned of the dangers of

• toxic chemicals.

• overpopulation.

• ocean pollution.

• chimpanzees.

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In 1992, representatives at the Earth Summit agreed on a plan, Agenda 21, which strove to balance

• economic and environmental concerns

• local and state laws

• voting and state laws

• none of these

early leader in environmental conservation

• John Muir

• voting

• nature conservancy

• Jane Goodall

agreement that proposed strategies to limit greenhouse gases

• the world conservation union

• kyoto protocol

• EIS

• department of the interior

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Which of the following is a primary focus of Chapter 21 in Environmental Science?

• Climate change

• Biodiversity conservation

• Sustainable agriculture

• Water pollution

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What is the main goal of sustainable agriculture as discussed in Chapter 21?

• Maximizing crop yield

• Reducing chemical use

• Improving soil health

• Increasing water usage

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