Biogeochemical Cycles Review

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What is the greenhouse effect?

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The greenhouse effect is the warming of Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere, such as CO2, CH4, and CFCs.

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What is the water cycle?

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The water cycle is the continuous movement of water on, above, and below the surface of the Earth, involving processes like evaporation, condensation, and precipitation.

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What is nitrogen fixation?

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Nitrogen fixation is the process of converting atmospheric nitrogen (N2) into a form usable by living organisms, primarily carried out by certain bacteria.

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What are limiting nutrients?

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Limiting nutrients are essential nutrients that are in short supply and restrict the growth of organisms in an ecosystem, such as nitrogen in aquatic systems.

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What is the carbon cycle?

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The carbon cycle is the series of processes by which carbon compounds are interconverted in the environment, involving carbon dioxide absorption by plants and its release through respiration and decomposition.

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What role do bacteria play in the nitrogen cycle?

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Bacteria play a crucial role in the nitrogen cycle by fixing nitrogen, nitrifying it, and denitrifying it, thus facilitating the movement of nitrogen through the ecosystem.

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What is the significance of the greenhouse gases?

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Greenhouse gases, like CO2 and methane, are significant because they trap heat in the atmosphere, contributing to global warming and climate change.

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What is evaporation?

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Evaporation is the process by which water changes from a liquid to a gas, usually due to heat from the sun.

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What is condensation?

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Condensation is the process by which water vapor in the air cools and changes back into liquid water, forming clouds.

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What is precipitation?

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Precipitation is any form of water, liquid or solid, that falls from the atmosphere to the Earth's surface, including rain, snow, sleet, and hail.