Which of the following is a keystone species in a marine ecosystem?

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Which of the following is a keystone species in a marine ecosystem?

A. Sea Star

B. Clownfish

C. Algae

D. Seagull

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What is the term for the process by which water droplets combine in clouds and form larger droplets that eventually fall as precipitation?

A. Condensation

B. Evaporation

C. Precipitation

D. Transpiration

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Which of the following is a method of reducing energy consumption in homes by improving insulation and sealing air leaks?

A. Energy Star Certification

B. Passive House Design

C. LEED Certification

D. Green Roof Installation

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What is the main purpose of a wetland ecosystem?

A. Water purification

B. Recreational activities

C. Industrial development

D. Waste disposal

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Which of the following is a method of reducing air pollution from vehicles by using technologies that trap and remove pollutants from exhaust gases?

A. Catalytic Converter

B. EGR Valve

C. ABS System

D. CVT Transmission

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What is the term for the process by which an ecosystem gradually returns to its original state after a disturbance has occurred?

A. Restoration

B. Rehabilitation

C. Regeneration

D. Succession

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What is the main greenhouse gas emitted from agricultural activities?

A. Methane

B. Carbon Dioxide

C. Nitrous Oxide

D. Chlorofluorocarbons

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What is the term for the gradual increase in the acidity of oceans due to the absorption of excess carbon dioxide from the atmosphere?

A. Acidification

B. Salinization

C. Alkalization

D. Neutralization

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What is the term for the process of converting organic waste into a material that can be used as a soil conditioner or fertilizer?

A. Incineration

B. Composting

C. Recycling

D. Landfilling

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What is the term for the measure of the total ecological footprint of an individual or population?

A. Carbon Footprint

B. Ecological Footprint

C. Water Footprint

D. Environmental Impact Index

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What is the term for the process by which nitrogen gas is converted into a form that plants can use?

A. Nitrogen Fixation

B. Nitrification

C. Denitrification

D. Ammonification

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Which of the following is a method of conserving water in agriculture that involves watering plants at their roots rather than spraying them from above?

A. Drip Irrigation

B. Flood Irrigation

C. Center Pivot Irrigation

D. Furrow Irrigation

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Which of the following is a source of non-point source pollution in aquatic ecosystems?

A. Wastewater Treatment Plants

B. Industrial Discharges

C. Runoff from Roads and Parking Lots

D. Oil Spills

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What is the term for the process by which water is absorbed by plants from the soil and released into the atmosphere as water vapor?

A. Evaporation

B. Transpiration

C. Condensation

D. Precipitation

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Which of the following is a major component of the Earth's biosphere?

A. Water

B. Soil

C. Air

D. Living Organisms

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What is the term for the process by which bacteria convert ammonia into nitrates and nitrites in the nitrogen cycle?

A. Denitrification

B. Nitrification

C. Ammonification

D. Nitrogen Fixation

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What is the term for the variety of ecosystems in a given region or on the entire Earth?

A. Habitat Diversity

B. Biodiversity

C. Genetic Diversity

D. Species Diversity

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Which of the following is an example of a primary consumer in an ecosystem?

A. Hawk

B. Rabbit

C. Grass

D. Snake

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What is the term for the introduction of harmful substances or pollutants into the environment?

A. Pollution

B. Erosion

C. Leaching

D. Condensation

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Which of the following is an example of a natural ecosystem service?

A. Water Treatment

B. Soil Erosion

C. Pollination of Plants

D. Air Pollution

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Which of the following is a major component of the Earth's lithosphere?

A. Water

B. Soil

C. Rock

D. Air

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Which of the following is a primary source of indoor air pollution?

A. Outdoor Smog

B. Radon Gas

C. Ground-level Ozone

D. Acid Rain

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Which of the following is a non-renewable resource?

A. Wind Energy

B. Natural Gas

C. Solar Power

D. Biomass

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Which of the following is a renewable source of freshwater?

A. Glacial Ice

B. Saltwater

C. Groundwater

D. Seawater

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Which of the following is a keystone species in a marine ecosystem?

A. Sea Star

B. Clownfish

C. Algae

D. Seagull

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Which layer of the atmosphere is closest to the Earth's surface?

A. Troposphere

B. Stratosphere

C. Mesosphere

D. Thermosphere

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What is the term for the layer of the atmosphere where weather events occur and most of Earth's weather phenomena take place?

A. Troposphere

B. Stratosphere

C. Mesosphere

D. Thermosphere

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Which of the following is an example of a point source of water pollution?

A. Agricultural Runoff

B. Oil Spill from a Tanker

C. Acid Rain

D. Urban Stormwater Runoff

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Which gas is released during the process of photosynthesis?

A. Oxygen

B. Carbon Dioxide

C. Methane

D. Nitrous Oxide

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What is the primary cause of the depletion of the ozone layer?

A. Carbon Emissions

B. Deforestation

C. Chlorofluorocarbons (CFCs)

D. Sulfur Dioxide

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What is the term for the variety of genetic traits within a population of a particular species?

A. Genetic Diversity

B. Species Diversity

C. Ecosystem Diversity

D. Habitat Diversity

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Accepted Answer

A. Sea Star

Which of the following is a keystone species in a marine ecosystem?

Correct Answer :

Show all AP Environmental Science MCQ

Related Questions

What is the term for the process by which water droplets combine in clouds and form larger droplets that eventually fall as precipitation?

Which of the following is a method of reducing energy consumption in homes by improving insulation and sealing air leaks?

What is the main purpose of a wetland ecosystem?

Which of the following is a method of reducing air pollution from vehicles by using technologies that trap and remove pollutants from exhaust gases?

What is the term for the process by which an ecosystem gradually returns to its original state after a disturbance has occurred?

What is the main greenhouse gas emitted from agricultural activities?

What is the term for the gradual increase in the acidity of oceans due to the absorption of excess carbon dioxide from the atmosphere?

What is the term for the process of converting organic waste into a material that can be used as a soil conditioner or fertilizer?

What is the term for the measure of the total ecological footprint of an individual or population?

What is the term for the process by which nitrogen gas is converted into a form that plants can use?

Which of the following is a method of conserving water in agriculture that involves watering plants at their roots rather than spraying them from above?

Which of the following is a source of non-point source pollution in aquatic ecosystems?

What is the term for the process by which water is absorbed by plants from the soil and released into the atmosphere as water vapor?

Which of the following is a major component of the Earth's biosphere?

What is the term for the process by which bacteria convert ammonia into nitrates and nitrites in the nitrogen cycle?

What is the term for the variety of ecosystems in a given region or on the entire Earth?

Which of the following is an example of a primary consumer in an ecosystem?

What is the term for the introduction of harmful substances or pollutants into the environment?

Which of the following is an example of a natural ecosystem service?

Which of the following is a major component of the Earth's lithosphere?

Which of the following is a primary source of indoor air pollution?

Which of the following is a non-renewable resource?

Which of the following is a renewable source of freshwater?

Which of the following is a keystone species in a marine ecosystem?

Which layer of the atmosphere is closest to the Earth's surface?

What is the term for the layer of the atmosphere where weather events occur and most of Earth's weather phenomena take place?

Which of the following is an example of a point source of water pollution?

Which gas is released during the process of photosynthesis?

What is the primary cause of the depletion of the ozone layer?

What is the term for the variety of genetic traits within a population of a particular species?

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