Cycling of Matter in Ecosystems

According to the principles of biogeochemical cycles, which statement is true about matter?

• Matter can be created in laboratories.

• Matter can be destroyed by natural processes.

• Matter cannot be created or destroyed.

• Matter is only recycled in the abiotic environment.

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How are water and nutrients typically obtained in the environment?

• They are imported from other ecosystems.

• They are produced or obtained from chemicals already present in the environment.

• They spontaneously generate under certain conditions.

• They are created through artificial means.

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What is the role of biogeochemical cycles in the environment?

• To increase the chemical compounds in the environment.

• To facilitate the movement of matter through the biotic and abiotic environment.

• To reduce the amount of nutrients in ecosystems.

• To create new forms of matter.

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Which process in the water cycle is responsible for water vapor moving back to Earth?

• Condensation

• Evaporation

• Precipitation

• Transpiration

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What is the process called when water is taken up by plants and released through their leaves?

• Condensation

• Transpiration

• Evaporation

• Precipitation

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Where does fallen water collect on Earth's surface?

• Mountains and hills

• Lakes, rivers, and oceans

• Underground aquifers

• Artificial reservoirs

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What is the Carbon Cycle primarily involved in?

• The transformation of nitrogen

• The cycling of carbon through different Earth spheres

• The movement of oxygen between living organisms

• The production of minerals in the soil

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Why is carbon considered an important element in biological contexts?

• It is a rare element that is found only in the atmosphere.

• It acts primarily as a pollutant in industrial emissions.

• It is the basic building block of all living things.

• It is used primarily as a fuel source in its raw form.

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What is the primary reason that removing plants increases CO2 levels in the air?

• Plants release more CO2 when they are removed.

• Removing plants reduces the amount of CO2 absorbed for photosynthesis.

• Plants decompose faster when removed, releasing CO2.

• Removing plants increases the earth's temperature, releasing more CO2.

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What is the result of trees not taking up CO2 for photosynthesis?

• Increased oxygen production

• Decreased sugar production

• Increased CO2 levels in the air

• Decreased water vapor in the air

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