Human Impact Review

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What is the carbon cycle?

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The carbon cycle is the process by which carbon is exchanged among the atmosphere, land, water, and living organisms. It involves processes such as photosynthesis, respiration, decomposition, and combustion.

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What is the impact of burning fossil fuels on the carbon cycle?

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Burning fossil fuels shifts carbon compounds from the geosphere (earth) to the atmosphere, increasing atmospheric CO2 levels.

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Define biomagnification.

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Biomagnification is the process by which the concentration of toxic substances increases in organisms at each successive level of the food chain.

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What are greenhouse gases?

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Greenhouse gases are gases in the atmosphere that trap heat, including carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O).

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How does a decrease in CO2 affect greenhouse gases?

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A decrease in CO2 can lead to an increase in other greenhouse gases as the balance of gases in the atmosphere is disrupted.

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What is deforestation?

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Deforestation is the process of clearing or removing trees and forests from a particular area, often leading to habitat loss and increased carbon emissions.

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What is biodiversity?

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Biodiversity refers to the variety of life in a particular ecosystem, including the number of different species and their interactions.

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What is an invasive species?

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An invasive species is a nonnative organism that, when introduced to a new environment, can cause harm to native species and ecosystems.

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What is the significance of native species in an ecosystem?

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Native species are organisms that naturally occur in a specific ecosystem and play a crucial role in maintaining ecological balance.

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What is the effect of pollution on ecosystems?

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Pollution can harm ecosystems by contaminating air, water, and soil, leading to health issues for organisms and loss of biodiversity.