Visualizing Environmental Science

349

140

120

100

80

60

40

20

0

1960 1970 1980

Year

Days of consumption

1990 2000 2010

World Grain Stocks, 1960–2010

James A. Sugar/NG Image Collection

H. Donnezan/Photo Researchers Inc.

Based on USDA data from Earth Policy Institute

CHAPTER OUTLINE

World Food Problems 350

s Population and World Hunger

■ Environmental InSight: World Hunger

s Poverty and Food

The Principal Types of Agriculture 353

Challenges of Agriculture 355

s Loss of Agricultural Land

s Global Decline in Domesticated Plant

and Animal Varieties

s Increasing Crop Yields

s Increasing Livestock Yields

s Environmental Impacts

■ Environmental InSight: Impacts of

Industrialized Agriculture

Solutions to Agricultural Problems 360

s Moving to Sustainable Agriculture

■ EnviroDiscovery: A New Weapon against Locust

Swarms

s Genetic Engineering: A Solution or a Problem?

Controlling Agricultural Pests 364

s Benefits of Pesticides

s Problems with Pesticides

■ What a Scientist Sees: Pesticide Use

and New Pest Species

s Alternatives to Pesticides

■ Case Study: Organic Agriculture

CHAPTER PLANNER✓✓

❑ Study the picture and read the opening story.

❑ Scan the Learning Objectives in each section:

p. 350 ❑ p. 353 ❑ p. 355 ❑ p. 360 ❑ p. 364 ❑

❑ Read the text and study all figures and visuals.

Answer any questions.

Analyze key features

❑ Environmental InSight, p. 351 ❑ p. 359 ❑

❑ Process Diagram, p. 353 ❑ p. 362 ❑

❑ EnviroDiscovery, p. 361

❑ What a Scientist Sees, p. 366

❑ Case Study, p. 368

❑ Stop: Answer the Concept Checks before

you go on:

p. 352 ❑ p. 354 ❑ p. 358 ❑ p. 363 ❑ p. 367 ❑

End of Chapter

❑ Review the Summary and Key Terms.

❑ Answer What is happening in this picture?

❑ Answer the Critical and Creative Thinking Questions.

Interpreting Data

Identify which years, if any, world

grain stocks have fallen below

U.N.-recommended levels.