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Environmental Science Practice Tests

These Grade 12 Science practice tests develop Environmental Science skills through ecosystems, biodiversity, nutrient cycles, population dynamics, pollution, climate change, resources, conservation, environmental health, and policy.

Skills covered

  • Analyzing ecosystems, carrying capacity, trophic levels, energy transfer, biodiversity, invasive species, and limiting factors
  • Explaining carbon, nitrogen, and water cycles, population growth, bioaccumulation, biomagnification, eutrophication, and pollutant types
  • Applying greenhouse effect, albedo, climate mitigation and adaptation, renewable resources, life-cycle assessment, ecological footprints, and sustainable yield
  • Evaluating keystone species, wildlife corridors, in situ conservation, restoration, edge effects, genetic diversity, protected areas, and pollinators
  • Interpreting risk assessment, toxicity, biomonitoring, environmental justice, U.S. environmental policy, impact assessment, source reduction, and green chemistry

How to use these practice tests

Trace each environmental problem from source to exposure, ecological or health effect, and possible response. Separate evidence from assumptions and compare prevention, mitigation, adaptation, conservation, and regulation strategies.

For more Grade 12 Science practice, return to the Grade 12 Science category.

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1. Test

Grade 12 Environmental Science Practice Tests

Practice Grade 12 Science questions about ecosystems, nutrient cycles, populations, pollution, climate change, natural resources, conservation, environmental health, and policy.

Choose the best answer. Identify the environmental system, connect causes to evidence and impacts, and distinguish mitigation, adaptation, conservation, and regulation.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is an ecosystem?

Please select an answer first.

Correct answer: A

The correct answer is A community of organisms interacting with one another and with the physical environment.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: An ecosystem includes living communities and abiotic factors such as water, soil, light, and temperature.
  3. Connect evidence to impact: The correct answer is A community of organisms interacting with one another and with the physical environment.

An ecosystem includes living communities and abiotic factors such as water, soil, light, and temperature.

2. QuestionMultiple choice

What is carrying capacity?

Please select an answer first.

Correct answer: B

The correct answer is The largest population an environment can support over time.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Carrying capacity depends on available resources, space, competition, predation, disease, and other limiting factors.
  3. Connect evidence to impact: The correct answer is The largest population an environment can support over time.

Carrying capacity depends on available resources, space, competition, predation, disease, and other limiting factors.

3. QuestionMultiple choice

What does a trophic level represent?

Please select an answer first.

Correct answer: C

The correct answer is A feeding position in an ecosystem.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Producers, primary consumers, and higher consumers occupy different trophic levels based on energy transfer.
  3. Connect evidence to impact: The correct answer is A feeding position in an ecosystem.

Producers, primary consumers, and higher consumers occupy different trophic levels based on energy transfer.

4. QuestionMultiple choice

Why is an energy pyramid usually widest at the producer level?

Please select an answer first.

Correct answer: D

The correct answer is Producers capture the greatest amount of available energy and energy is lost at each transfer.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Only a fraction of energy passes to the next trophic level; much is lost as heat and through metabolism.
  3. Connect evidence to impact: The correct answer is Producers capture the greatest amount of available energy and energy is lost at each transfer.

Only a fraction of energy passes to the next trophic level; much is lost as heat and through metabolism.

5. QuestionMultiple choice

What process moves carbon dioxide from the atmosphere into many living organisms?

Please select an answer first.

Correct answer: A

The correct answer is Photosynthesis.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Plants, algae, and some microorganisms use photosynthesis to incorporate atmospheric carbon dioxide into organic molecules.
  3. Connect evidence to impact: The correct answer is Photosynthesis.

Plants, algae, and some microorganisms use photosynthesis to incorporate atmospheric carbon dioxide into organic molecules.

6. QuestionMultiple choice

What is nitrogen fixation?

Please select an answer first.

Correct answer: B

The correct answer is Conversion of atmospheric nitrogen into forms organisms can use.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Certain bacteria convert nitrogen gas into ammonia or related compounds that can enter biological nutrient cycles.
  3. Connect evidence to impact: The correct answer is Conversion of atmospheric nitrogen into forms organisms can use.

Certain bacteria convert nitrogen gas into ammonia or related compounds that can enter biological nutrient cycles.

7. QuestionMultiple choice

What is a major reservoir in the water cycle?

Please select an answer first.

Correct answer: C

The correct answer is The ocean.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: The oceans store most of Earth's water and exchange it with the atmosphere, land, and organisms.
  3. Connect evidence to impact: The correct answer is The ocean.

The oceans store most of Earth's water and exchange it with the atmosphere, land, and organisms.

8. QuestionMultiple choice

What is biodiversity?

Please select an answer first.

Correct answer: D

The correct answer is The variety of genes, species, and ecosystems in a region or on Earth.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Biodiversity includes genetic diversity, species diversity, and ecosystem diversity.
  3. Connect evidence to impact: The correct answer is The variety of genes, species, and ecosystems in a region or on Earth.

Biodiversity includes genetic diversity, species diversity, and ecosystem diversity.

9. QuestionMultiple choice

Why can an invasive species harm a new ecosystem?

Please select an answer first.

Correct answer: A

The correct answer is It may lack natural controls and compete with or prey on native species.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Invasive species can alter food webs, spread disease, change habitat, and reduce native populations.
  3. Connect evidence to impact: The correct answer is It may lack natural controls and compete with or prey on native species.

Invasive species can alter food webs, spread disease, change habitat, and reduce native populations.

10. QuestionMultiple choice

What is a limiting factor?

Please select an answer first.

Correct answer: B

The correct answer is A resource or condition that restricts population growth.

  1. Identify the environmental science concept: Determine whether the question concerns ecosystems, cycles, populations, pollution, climate, resources, conservation, policy, or environmental health.
  2. Apply the systems principle: Food, water, space, disease, predation, and temperature can limit population size and distribution.
  3. Connect evidence to impact: The correct answer is A resource or condition that restricts population growth.

Food, water, space, disease, predation, and temperature can limit population size and distribution.

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