Question 1

What is undergrazing?

Accepted Answer

A) grazing animals in a way that mimics wild grazers 
B) when animals grazing on lands do not have enough grass to eat 
C) the process that transforms fertile grasslands into deserts 
D) grazing too many animals on a grassland and eating the plants faster than they can grow 
E) grazing too few animals on a grassland to maintain it ecologically 
A) grazing animals in a way that mimics wild grazers 
B) when animals grazing on lands do not have enough grass to eat 
C) the process that transforms fertile grasslands into deserts 
D) grazing too many animals on a grassland and eating the plants faster than they can grow 
E) grazing too few animals on a grassland to maintain it ecologically

Question 2

What are some of the important ecosystem services provided by grasslands?

Accepted Answer

Grasslands provide numerous important se

Question 3

What provides a livelihood for many people living in Zimbabwe?

Accepted Answer

A) ranching 
B) fishing 
C) farming 
D) raising wildlife 
E) hunting 
A) ranching 
B) fishing 
C) farming 
D) raising wildlife 
E) hunting

Question 4

Science Literacy Use the following graphic to answer the next questions.  
-Which two layers are involved in the formation of soil?

Accepted Answer

A) A and O 
B) B and C 
C) C and O 
D) A and C 
A) A and O 
B) B and C 
C) C and O 
D) A and C

Question 5

What were some of the problems with the concept of rotational grazing?

Accepted Answer

A) It did not help to stop desertification. 
B) Savory felt it focused too heavily on limiting the number of animals allowed to graze. 
C) Savory felt it focused too heavily on the amount of time the animals were allowed to graze. 
D) It did not help to stop desertification,and felt it focused too heavily on limiting the number of animals allowed to graze. 
E) None of these answers are correct. 
A) It did not help to stop desertification. 
B) Savory felt it focused too heavily on limiting the number of animals allowed to graze. 
C) Savory felt it focused too heavily on the amount of time the animals were allowed to graze. 
D) It did not help to stop desertification,and felt it focused too heavily on limiting the number of animals allowed to graze. 
E) None of these answers are correct.

Question 6

What is the greatest threat facing grasslands today?

Accepted Answer

A) global climate change 
B) human land use decisions 
C) overgrazing 
D) urbanization 
E) pollution 
A) global climate change 
B) human land use decisions 
C) overgrazing 
D) urbanization 
E) pollution

Question 7

How does undergrazing reduce the biodiversity of grasslands?

Accepted Answer

Since overgrazing pastures leads to dese

Question 8

Which soil layer contains the most decaying material and living organisms?

Accepted Answer

A) B horizon 
B) A horizon 
C) R horizon 
D) C horizon 
E) D horizon 
A) B horizon 
B) A horizon 
C) R horizon 
D) C horizon 
E) D horizon

Question 9

Refer to Infographic 3.Discuss three characteristics many of those areas at highest risk of desertification have in common.

Accepted Answer

Many of these areas are bordering desert

Question 10

Under ideal conditions,it takes about _____________ to make 1 millimeter of soil.

Accepted Answer

A) 5 years 
B) 10 years 
C) 5 months 
D) 1 year 
E) 20 days 
A) 5 years 
B) 10 years 
C) 5 months 
D) 1 year 
E) 20 days

Question 11

Which of the following is a consequence of overgrazing in grasslands?

Accepted Answer

A) compaction of soil 
B) reduction in water penetration 
C) reduction in seed germination 
D) reduced seedling growth 
E) All of these answers are correct. 
A) compaction of soil 
B) reduction in water penetration 
C) reduction in seed germination 
D) reduced seedling growth 
E) All of these answers are correct.

Exam 20: soil Resources and Grasslands Restoring the Range

What is undergrazing?

What are some of the important ecosystem services provided by grasslands?

What provides a livelihood for many people living in Zimbabwe?

Science Literacy Use the following graphic to answer the next questions. -Which two layers are involved in the formation of soil?

What were some of the problems with the concept of rotational grazing?

What is the greatest threat facing grasslands today?

How does undergrazing reduce the biodiversity of grasslands?

Which soil layer contains the most decaying material and living organisms?

Refer to Infographic 3.Discuss three characteristics many of those areas at highest risk of desertification have in common.

Under ideal conditions,it takes about _____________ to make 1 millimeter of soil.

Which of the following is a consequence of overgrazing in grasslands?

environmental Literacy and Sustainability Lessons From a Vanished Society

Science Literacy and the Process of Science Fungal Attacker Threatens North American Bats

Information Literacy and Toxicology Lead in the Water

Ecosystems and Nutrient Cycling Engineering Earth

Population Ecology Gray Wolves Return to Yellowstone

Community Ecology the Florida Everglades: a Community in Cris

evolution and Extinction a Tropical Murder Mystery

Biodiversity Palm Oil Plantations Threaten Tropical Forests

Preserving Biodiversity a Forest Without Elephants

Human Populations the Kerala Model

Urbanization and Sustainable Communities Creating Green Cities

Environmental Health Eradicating a Parasitic Nightmare

ecological Economics and Consumption Wall to Wall, Cradle to Cradle

environmental Policy the World Tackles Ozone Depletion

managing Solid Waste a Plastic Surf

Freshwater Resources Toilet to Tap

Water Pollution Suffocating the Gulf

marine Ecosystems Ocean Acidification: the Other Co2 Problem

Forests Returning Trees to Haiti

Mineral Resources No Stone Unturned

Feeding the World a Gene Revolution

sustainable Agriculture: Raising Crops Farming Like an Ecosystem

Agriculture: Raising Livestock Can Meat Be Part of a Healthy, Environmentally Conscious Diet

Fisheries and Aquaculture Fish in a Warehouse

coal Bringing Down the Mountain

Oil and Natural Gas the Bakken Oil Boom

Air Pollution the Youngest Scientists

global Climate Change Climate Refugees

Nuclear Power the Future of Fukushima

Sun, Wind, Water, and Earth Energy Fueled by the Sun

Biofuels Gas From Grass

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