GSH 2024-25 Ecology Test

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What is an Invasive Species?

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An invasive species is a non-native organism that, when introduced to a new environment, disrupts the local ecosystem by outcompeting native species for resources.

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What does HIPPCO stand for in relation to human impacts on ecosystems?

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HIPPCO is an acronym that stands for Habitat destruction, Invasive species, Pollution, Population growth, Climate change, and Overexploitation.

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What constitutes an ecosystem?

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An ecosystem is a community of living organisms (plants, animals, and microorganisms) interacting with their physical environment (soil, water, air) in a specific area.

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What is the role of parasitic organisms in controlling invasive species?

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Parasitic organisms can help control invasive species populations by feeding on them, thereby reducing their numbers and impact on the ecosystem.

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Define Deforestation.

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Deforestation is the removal of a forest or stand of trees, which are then converted to non-forest uses, such as agriculture or urban development.

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What is a Keystone Species?

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A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance, playing a critical role in maintaining the structure of an ecological community.

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What is an Endemic Species?

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An endemic species is a species that is native to and restricted to a specific geographic area.

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What is the difference between Native and Non-Native Species?

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Native species are those that naturally occur in a specific region, while non-native species are introduced to an area where they do not naturally occur.

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What is the significance of Biodiversity in an ecosystem?

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Biodiversity refers to the variety of life in a particular habitat or ecosystem, and it is crucial for ecosystem resilience, productivity, and stability.

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What are the effects of Pollution on ecosystems?

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