Environmental Science PreTest (Updated 2025)

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What is clear cutting in forestry?

Back

Clear cutting is a logging practice where all trees in a designated area are cut down, which can lead to significant environmental damage, including habitat destruction and increased carbon emissions.

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What does the Endangered Species Act protect?

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The Endangered Species Act is a law that protects at-risk animals and plants from extinction by prohibiting their harm and promoting recovery efforts.

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How does industrial logging in deciduous forests affect atmospheric CO2 levels?

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Industrial logging in deciduous forests can lead to an increase in atmospheric CO2 due to the reduction of trees that absorb carbon dioxide.

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Define an invasive species.

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An invasive species is a non-native organism that is introduced to a new ecosystem and can cause harm due to the lack of natural predators.

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What is a secondary consumer in a food web?

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A secondary consumer is an organism that eats primary consumers; examples include hawks, shrews, snakes, and insect-eating birds.

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What is selective cutting in forestry?

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Selective cutting is a logging practice where only certain trees are harvested, allowing for the preservation of the overall forest structure and ecosystem.

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What is the impact of deforestation on biodiversity?

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Deforestation leads to habitat loss, which can result in decreased biodiversity as species lose their homes and food sources.

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What is the role of keystone species in an ecosystem?

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Keystone species are organisms that have a disproportionately large impact on their environment relative to their abundance, helping to maintain the structure of the ecosystem.

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What is the purpose of the Wildlife Protection Act?

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The Wildlife Protection Act aims to protect wildlife and their habitats from exploitation and destruction.

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What are ecological services?

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Ecological services are the benefits that ecosystems provide to humans, such as clean air, water purification, and pollination of crops.