Environmental Science Final Review

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What is the nitrogen cycle?

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The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen fixation, nitrification, denitrification, and ammonification, playing a crucial role in ecosystem functioning.

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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 that plants can absorb and use, typically ammonia (NH3), often facilitated by certain bacteria.

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What role do producers play in ecosystems?

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Producers, such as plants, use photosynthesis to convert sunlight into chemical energy, forming the base of the food chain and providing energy for consumers.

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What is an ecological footprint?

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An ecological footprint measures the amount of land and water area required to sustain a population's resource use and absorb its waste, reflecting the environmental impact of that population.

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Which cycle lacks a gaseous component?

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The phosphorus cycle is unique in that it does not have a gaseous phase; phosphorus primarily moves through soil, water, and living organisms.

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What is environmental science?

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Environmental science is an interdisciplinary field that studies how humans interact with their environment, encompassing aspects of biology, chemistry, geology, and social sciences.

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What is photosynthesis?

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Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

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What is biodiversity?

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Biodiversity refers to the variety of life in a particular habitat or ecosystem, including the diversity of species, genetic variation, and ecosystem diversity.

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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 such as evaporation, condensation, precipitation, and infiltration.

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What is denitrification?

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Denitrification is the process by which bacteria convert nitrates in the soil back into nitrogen gas (N2), releasing it into the atmosphere and completing the nitrogen cycle.

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