2. Chapter: Our Impact on Land Table of Contents Section 3: Conserving Resources Section 1: Population Impact on the Environment Section 2: Using Land
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17. 1 Section Check Question 1 A. community B. ecosystem C. niche D. population All the individuals of one species occupying a particular area are a(n) __________. NC: 3.06
18. 1 Section Check Answer The answer is D. A population can be of a large or small area. NC: 3.06
19. 1 Section Check Question 2 What does the term “carrying capacity” mean? Answer Carrying capacity is the largest number of individuals of a particular species that the environment can support. NC: 3.08
20. 1 Section Check Question 3 What is the approximate current human population of Earth? A. 600 million B. 1 billion C. 6 billion D. 9 billion NC: 3.08
21. 1 Section Check Answer The answer is C. The current human population of is approximately 6 billion. NC: 3.08
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53. 2 Section Check Question 1 What is deforestation? Answer Deforestation is the clearing of forested land for agriculture or industry. NC: 3.06
54. 2 Section Check Question 2 What is a primary benefit of farming practices such as no-till farming and contour plowing? Answer These practices reduce soil loss. Other techniques used to reduce soil erosion are planting cover crops and rows of trees along fields. NC: 3.06, 3.07, 3.08
55. 2 Section Check Question 3 __________ is the volume of water flowing past a point per unit of time. A. Pollution B. Rainfall C. Runoff D. Stream discharge NC: 3.01
56. 2 Section Check Answer The answer is D. A stream’s discharge increases when more water enters its channel. NC: 3.01
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69. 3 Section Check Question 1 Piling yard wastes where they can decompose gradually is __________. A. composting B. mulching C. recycling D. reusing NC: 3.06, 3.08
70. 3 Section Check Answer The answer is A. Composting can greatly reduce the amount of trash put in landfills. NC: 3.06, 3.08
71. 3 Section Check Question 2 What is conservation? Answer Conservation is the careful use of earth materials to reduce damage to the environment. NC: 3.06, 3.08
72. 3 Section Check Question 3 Using materials again is called __________. A. composting B. conservation C. preservation D. recycling NC: 3.06, 3.08
73. 3 Section Check Answer The answer is D. Recycling has helped to decrease the amount of trash put into landfills. NC: 3.06, 3.08
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