Question 1

Complex networks of interconnected food chains are ____.

Accepted Answer

A)  food webs 
B)  food distribution interactions 
C)  trophic levels 
D)  pyramids of energy 
E)  trophic chains 
A)  food webs 
B)  food distribution interactions 
C)  trophic levels 
D)  pyramids of energy 
E)  trophic chains

Question 2

In hundreds of years,we have released large quantities of fossil fuels that took millions of years to form.

Accepted Answer

A) True 
 B)False

Question 3

What term describes organisms that complete the final breakdown and recycling of organic materials from the remains of all organisms?

Accepted Answer

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

Question 4

High quality energy is constantly ____.

Accepted Answer

A)  being made 
B)  being recycled 
C)  being destroyed 
D)  becoming matter 
E)  becoming low quality energy 
A)  being made 
B)  being recycled 
C)  being destroyed 
D)  becoming matter 
E)  becoming low quality energy

Question 5

Use the accompanying figure to answer the following question(s).
-Letter D,at the base of the pyramid given above,represents what group of organisms?

Accepted Answer

The answer of   Use the accompanying figure to...

Question 6

How much of the earth's water supply is available as accessible liquid freshwater?

Accepted Answer

A)  0.024% 
B)  2.1% 
C)  4.7% 
D)  7.1% 
E)  9.6% 
A)  0.024% 
B)  2.1% 
C)  4.7% 
D)  7.1% 
E)  9.6%

Question 7

The form of nitrogen used by plants to produce various amino acids,proteins,nucleic acids,and vitamins is ____.

Accepted Answer

A)  ammonium ions 
B)  nitrogen gas 
C)  proteins 
D)  nitrites 
E)  nitrate ions 
A)  ammonium ions 
B)  nitrogen gas 
C)  proteins 
D)  nitrites 
E)  nitrate ions

Question 8

-In the accompanying figure,notice that heat is lost by each component of the ecosystem,and that the sun is shown entering at only one point in the system.Explain how this is representative of the two laws of energy (two laws of thermodynamics).

Accepted Answer

The first law of energy or thermodynamic

Question 9

Aerobic respiration requires ____.

Accepted Answer

A)  glucose and carbon dioxide 
B)  glucose and oxygen 
C)  oxygen and water 
D)  carbon dioxide and water 
E)  carbon dioxide and oxygen 
A)  glucose and carbon dioxide 
B)  glucose and oxygen 
C)  oxygen and water 
D)  carbon dioxide and water 
E)  carbon dioxide and oxygen

Question 10

Vitousek,Rojstaczer,and others estimate humans now use,waste,or destroy what percentage of the earth's total potential NPP?

Accepted Answer

A)  18% 
B)  28% 
C)  38% 
D)  58% 
E)  78% 
A)  18% 
B)  28% 
C)  38% 
D)  58% 
E)  78%

Question 11

Organisms that convert simple inorganic compounds into nutrients,without sunlight,are called ____________________ .

Accepted Answer

autotrophs

Question 12

Despite a low net primary productivity (NPP),which ecosystem or life zone produces the most biomass each year?

Accepted Answer

A)  swamps and marshes 
B)  tropical rain forest 
C)  temperate forests 
D)  open ocean 
E)  estuaries 
A)  swamps and marshes 
B)  tropical rain forest 
C)  temperate forests 
D)  open ocean 
E)  estuaries

Question 13

The hydrologic cycle is the movement of ____.

Accepted Answer

A)  carbon 
B)  hydrogen 
C)  hydrocarbons 
D)  carbohydrates 
E)  water 
A)  carbon 
B)  hydrogen 
C)  hydrocarbons 
D)  carbohydrates 
E)  water

Question 14

____________________ refers to how fast producers can make the chemical energy that is stored in their tissues and that is potentially available to other organisms (consumers)in an ecosystem.

Accepted Answer

Net primar

Question 15

What is a major difference between the phosphorus cycle and the water,carbon,and nitrogen cycles?

Accepted Answer

A)  The phosphorous cycle is much faster than the others. 
B)  The phosphorous cycle does not include the atmosphere but the others do. 
C)  The phosphorous cycle makes use of living organisms but the others do not. 
D)  The phosphorous cycle is able to create new energy. 
E)  The phosphorous cycle has not been impacted by human activity. 
A)  The phosphorous cycle is much faster than the others. 
B)  The phosphorous cycle does not include the atmosphere but the others do. 
C)  The phosphorous cycle makes use of living organisms but the others do not. 
D)  The phosphorous cycle is able to create new energy. 
E)  The phosphorous cycle has not been impacted by human activity.

Question 16

Humans intervene in the nitrogen cycle in several ways.Which of the following is one of those ways?

Accepted Answer

A)  Burning fossil fuels adds nitric oxide. 
B)  Agriculture decreases the production of nitrous oxides. 
C)  Protecting and replanting forests releases nitrogen. 
D)  Harvesting nitrogen-rich crops stores nitrogen in the topsoil. 
E)  Agriculture with fertilizers uses nitrogen in the aquatic systems. 
A)  Burning fossil fuels adds nitric oxide. 
B)  Agriculture decreases the production of nitrous oxides. 
C)  Protecting and replanting forests releases nitrogen. 
D)  Harvesting nitrogen-rich crops stores nitrogen in the topsoil. 
E)  Agriculture with fertilizers uses nitrogen in the aquatic systems.

Question 17

What is a result of phosphate rich runoff from land?

Accepted Answer

A)  improved agricultural production 
B)  increased growth of algae in streams,lakes,and other water bodies 
C)  healthier forests and increased forest growth 
D)  decreased need for fertilization of agricultural crops 
E)  erosion and release of marine sediments 
A)  improved agricultural production 
B)  increased growth of algae in streams,lakes,and other water bodies 
C)  healthier forests and increased forest growth 
D)  decreased need for fertilization of agricultural crops 
E)  erosion and release of marine sediments

Question 18

Carbon cycles through the biosphere and depends on the process of ____________________ and ____________________.

Accepted Answer

photosynthesis respi

Question 19

Decomposers are mainly bacteria and ____________________.

Accepted Answer

The answer of Decomposers are mainly bacteria and ____________________....

Question 20

The most fundamental structural and functional units of life are ____.

Accepted Answer

A)  atoms 
B)  molecules 
C)  compounds 
D)  cells 
E)  mitochondrion 
A)  atoms 
B)  molecules 
C)  compounds 
D)  cells 
E)  mitochondrion

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

Complex networks of interconnected food chains are ____.

In hundreds of years,we have released large quantities of fossil fuels that took millions of years to form.

What term describes organisms that complete the final breakdown and recycling of organic materials from the remains of all organisms?

High quality energy is constantly ____.

Use the accompanying figure to answer the following question(s). -Letter D,at the base of the pyramid given above,represents what group of organisms?

How much of the earth's water supply is available as accessible liquid freshwater?

The form of nitrogen used by plants to produce various amino acids,proteins,nucleic acids,and vitamins is ____.

-In the accompanying figure,notice that heat is lost by each component of the ecosystem,and that the sun is shown entering at only one point in the system.Explain how this is representative of the two laws of energy (two laws of thermodynamics).

Aerobic respiration requires ____.

Vitousek,Rojstaczer,and others estimate humans now use,waste,or destroy what percentage of the earth's total potential NPP?

Organisms that convert simple inorganic compounds into nutrients,without sunlight,are called ____________________ .

Despite a low net primary productivity (NPP),which ecosystem or life zone produces the most biomass each year?

The hydrologic cycle is the movement of ____.

____________________ refers to how fast producers can make the chemical energy that is stored in their tissues and that is potentially available to other organisms (consumers)in an ecosystem.

What is a major difference between the phosphorus cycle and the water,carbon,and nitrogen cycles?

Humans intervene in the nitrogen cycle in several ways.Which of the following is one of those ways?

What is a result of phosphate rich runoff from land?

Carbon cycles through the biosphere and depends on the process of ____________________ and ____________________.

Decomposers are mainly bacteria and ____________________.

The most fundamental structural and functional units of life are ____.

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

Carbon cycles through the biosphere and depends on the process of and .