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Home > World History > NetExplorations > The Environment > Test Your Knowledge

	The Biosphere
	Protecting Our History
	New Kinds of Cars
	Conserving for the Future
	The Role of Zoos

You probably already know something about the environment and environmental protection. This quiz is an opportunity to check your knowledge before you start your explorations. After answering all of the questions, click "Check Your Answers."

1. What is the name for the narrow zone in which life on Earth exists?
Biosphere Ozone layer	Grasslands Thermosphere
2. What has been one result of the thickening of gases in the stratosphere?
Falling temperatures Increased rainfall	Global warming Increased carbon monoxide
3. What condition has been linked to high levels of CFCs in the atmosphere?
Higher marine life density Thinning of the ozone layer	A break in the food chain Worsening smog
4. What are biomes?
Rain forests Marine ecosytems	Areas of unique climate and vegetation Experimental sites that simulate living conditions on Earth
5. How is an ecosystem maintained in nature?
By introducing more producers and fewer consumers By balancing producers, consumers, and decomposers	By generating new sources of power By reducing CFC levels
6. What is the trend in worldwide population growth?
A steady rise in population Waves of growth followed by plateaus	An increasing rate of population growth Rise in population until the late 1960s
7. What environmental problem is a result of deforestation?
Biodiversity Loss of habitats	Creating CFCs Formation of fossil fuels
8. What action contributes most of the pollutants that cause acid rain?
Burning fossil fuels Cutting down trees	Using car air conditioners Processing of industrial waste
9. What action can zoos take to protect endangered animal habitats?
Adding aquariums Creating more natural spaces for zoo animals	Rescuing abandoned animals Educating the public
10. What automotive technology could sharply reduce greenhouse gases?
Internal combustion engines Diesel engines	Ethanol engines Hybrid engines

Credits: (detail) Killer whale show © John Warden/Getty Images; Rainforest clearance © Tony Morrison/South American Pictures.

Other Topics


	Cave Art

	The Parthenon

	Chinese Healing Arts

	Counting: Calendars & Cords

	The French Revolution

	Mass Entertainment

	Life in the 1920s

	The Environment

These topics correspond to chapters in the Patterns of Interaction series (McDougal Littell, 2005).