Ecology Cycles

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What is the Water Cycle?

Back

The Water Cycle is the continuous process by which water moves from the Earth's surface to the atmosphere and back, involving processes such as evaporation, condensation, precipitation, and infiltration.

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What is the Nitrogen Cycle?

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The Nitrogen Cycle is the series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation, nitrification, denitrification, and ammonification.

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What is nitrogen fixation?

Back

Nitrogen fixation is the process of converting atmospheric nitrogen (N2) into a form that plants can use, such as ammonia (NH3), often facilitated by certain bacteria.

Front

What role do decomposers play in the Nitrogen Cycle?

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Decomposers break down dead organic matter, returning nitrogen to the soil in the form of ammonium, which can then be converted into nitrates by nitrifying bacteria.

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What is the significance of the Water Cycle for ecosystems?

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The Water Cycle is crucial for maintaining ecosystems as it regulates climate, supports plant growth, and provides fresh water for all living organisms.

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What is transpiration?

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Transpiration is the process by which water is absorbed by plant roots, moves through plants, and is released as water vapor through pores in leaves.

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What is the process of evaporation?

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Evaporation is the process by which liquid water is converted into water vapor, typically occurring when the sun heats water in oceans, rivers, and lakes.

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What is condensation in the Water Cycle?

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

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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.

Front

What is the role of nitrifying bacteria in the Nitrogen Cycle?

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Nitrifying bacteria convert ammonium (NH4+) into nitrites (NO2-) and then into nitrates (NO3-), which are usable forms of nitrogen for plants.