Question 1

Life on the earth depends on interaction of gravity,the cycling of matter,and the ____.

Accepted Answer

A)  recycling of energy 
B)  one-way flow of high-quality energy 
C)  one-way flow of matter 
D)  destruction of energy 
E)  consumption of matter 
A)  recycling of energy 
B)  one-way flow of high-quality energy 
C)  one-way flow of matter 
D)  destruction of energy 
E)  consumption of matter

Question 2

Nitrogen fixation is accomplished by specialized ____________________ in the soil and ____________________ in aquatic environments.

Accepted Answer

bacteria b

Question 3

Temporary oceanic,atmospheric,and terrestrial storage sites for nutrients are called ____________________.

Accepted Answer

The answer of Temporary oceanic,atmospheric,and terrestrial storage sites for nutrients...

Question 4

Nutrient cycles connect past,present,and future forms of life.

Accepted Answer

A) True 
 B)False

Question 5

If grass stores 1,000 energy units received from the sun,the ecological efficiency of the ecosystem is 10%,and the trophic levels are grass $\rightarrow$ cow $\rightarrow$ human,how many units of energy does the human receive of the original 1,000 units?

Accepted Answer

A)  900 
B)  200 
C)  100 
D)  10 
E)  1 
A)  900 
B)  200 
C)  100 
D)  10 
E)  1

Question 6

The hydrologic cycle is driven primarily by ____.

Accepted Answer

A)  solar energy 
B)  lunar tides 
C)  solar tides 
D)  mechanical energy 
E)  chemical energy 
A)  solar energy 
B)  lunar tides 
C)  solar tides 
D)  mechanical energy 
E)  chemical energy

Question 7

Which terrestrial ecosystem or life zone produces the lowest net primary productivity per year?

Accepted Answer

A)  taiga 
B)  extreme desert 
C)  desert scrub 
D)  temperate grassland 
E)  agricultural land 
A)  taiga 
B)  extreme desert 
C)  desert scrub 
D)  temperate grassland 
E)  agricultural land

Question 8

Destruction of tropical rain forests will help accelerate ____________________.

Accepted Answer

The answer of Destruction of tropical rain forests will help...

Question 9

The very necessary process of breaking down the dead bodies of organisms is a function of ____.

Accepted Answer

A)  detritivores 
B)  omnivores 
C)  carnivores 
D)  herbivores 
E)  producers 
A)  detritivores 
B)  omnivores 
C)  carnivores 
D)  herbivores 
E)  producers

Question 10

Which of the following is an abiotic component of an ecosystem?

Accepted Answer

A)  nutrients 
B)  microbes 
C)  autotrophs 
D)  heterotrophs 
E)  tertiary consumers 
A)  nutrients 
B)  microbes 
C)  autotrophs 
D)  heterotrophs 
E)  tertiary consumers

Question 11

A group of different species living in a particular place,and potentially interacting with each other is called a population.

Accepted Answer

A) True 
 B)False

Question 12

-Examine the accompanying figure.Notice the amount of average net primary productivity gets smaller and smaller as you move down the list of terrestrial ecosystems and,similarly,in the list of aquatic ecosystems.What is the common factor in the terrestrial system that causes the decline? What is the common factor in the aquatic system that causes the decline there?

Accepted Answer

Terrestrial ecosystems are significantly

Question 13

Which consumers feed on the flesh of herbivores?

Accepted Answer

A)  primary consumers 
B)  secondary consumers 
C)  tertiary consumers 
D)  apoptotic consumers 
E)  bioconsumers 
A)  primary consumers 
B)  secondary consumers 
C)  tertiary consumers 
D)  apoptotic consumers 
E)  bioconsumers

Question 14

What is one major way in which humans harmfully impact the water cycle?

Accepted Answer

A)  overpumping of aquifers 
B)  expanding wetlands 
C)  decreasing runoff 
D)  increasing infiltration 
E)  recharging aquifers 
A)  overpumping of aquifers 
B)  expanding wetlands 
C)  decreasing runoff 
D)  increasing infiltration 
E)  recharging aquifers

Question 15

The oceans of the earth cover approximately what percentage of the earth's surface?

Accepted Answer

A)  3% 
B)  29% 
C)  51% 
D)  71% 
E)  97% 
A)  3% 
B)  29% 
C)  51% 
D)  71% 
E)  97%

Question 16

What is the term for the portion of the earth's atmosphere,hydrosphere,and geosphere where life is found?

Accepted Answer

A)  organosphere 
B)  biological base 
C)  community 
D)  ecosystem 
E)  biosphere 
A)  organosphere 
B)  biological base 
C)  community 
D)  ecosystem 
E)  biosphere

Question 17

____________________ can help scientists understand large and very complex systems by allowing them to change variables and project possible changes.

Accepted Answer

Computer m

Question 18

What is the innermost layer of the atmosphere,extending 17 kilometers above sea level at the tropics and about 7 kilometers above the earth's north and south poles?

Accepted Answer

A)  troposphere 
B)  stratosphere 
C)  hydrosphere 
D)  geosphere 
E)  biosphere 
A)  troposphere 
B)  stratosphere 
C)  hydrosphere 
D)  geosphere 
E)  biosphere

Question 19

Scientists have less than ____ percent of the ecological data they need to evaluate the ecosystems in the United States.

Accepted Answer

A)  5 
B)  8 
C)  12 
D)  25 
E)  50 
A)  5 
B)  8 
C)  12 
D)  25 
E)  50

Question 20

Use the accompanying figure to answer the following question(s).
-How many kilocalories have been lost between level A and level D?

Accepted Answer

The answer of   Use the accompanying figure to...

Exam 3: Ecosystems: What Are They and How Do They Work

Life on the earth depends on interaction of gravity,the cycling of matter,and the ____.

Nitrogen fixation is accomplished by specialized ____________________ in the soil and ____________________ in aquatic environments.

Temporary oceanic,atmospheric,and terrestrial storage sites for nutrients are called ____________________.

Nutrient cycles connect past,present,and future forms of life.

If grass stores 1,000 energy units received from the sun,the ecological efficiency of the ecosystem is 10%,and the trophic levels are grass →\rightarrow→ cow →\rightarrow→ human,how many units of energy does the human receive of the original 1,000 units?

The hydrologic cycle is driven primarily by ____.

Which terrestrial ecosystem or life zone produces the lowest net primary productivity per year?

Destruction of tropical rain forests will help accelerate ____________________.

The very necessary process of breaking down the dead bodies of organisms is a function of ____.

Which of the following is an abiotic component of an ecosystem?

A group of different species living in a particular place,and potentially interacting with each other is called a population.

Which consumers feed on the flesh of herbivores?

What is one major way in which humans harmfully impact the water cycle?

The oceans of the earth cover approximately what percentage of the earth's surface?

What is the term for the portion of the earth's atmosphere,hydrosphere,and geosphere where life is found?

____________________ can help scientists understand large and very complex systems by allowing them to change variables and project possible changes.

What is the innermost layer of the atmosphere,extending 17 kilometers above sea level at the tropics and about 7 kilometers above the earth's north and south poles?

Scientists have less than ____ percent of the ecological data they need to evaluate the ecosystems in the United States.

Use the accompanying figure to answer the following question(s). -How many kilocalories have been lost between level A and level D?

Environmental Problems, their Causes, and Sustainability

Science, matter, energy, and Systems

Biodiversity and Evolution

Biodiversity, species Interactions, and Population Control

The Human Population and Its Impact

Climate and Biodiversity

Aquatic Biodiversity

Sustaining Biodiversity: The Species Approach

Sustaining Terrestrial Biodiversity: The Ecosystem Approach

Sustaining Aquatic Biodiversity

Food, soil, and Pest Management

Water Resources

Geology and Nonrenewable Mineral Resources

Nonrenewable Energy

Energy Efficiency and Renewable Energy

Environmental Hazards and Human Health

Air Pollution

Climate Disruption and Ozone Depletion

Water Pollution

Solid and Hazardous Waste

Cities and Sustainability

Economics, environment, and Sustainability

Politics, environment, and Sustainability

Environmental Worldviews, ethics, and Sustainability

Filters

Nitrogen fixation is accomplished by specialized in the soil and in aquatic environments.

If grass stores 1,000 energy units received from the sun,the ecological efficiency of the ecosystem is 10%,and the trophic levels are grass $\rightarrow$ cow $\rightarrow$ human,how many units of energy does the human receive of the original 1,000 units?