Enviro. Sci 1st Semester Final

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What is secondary succession?

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Secondary succession is the process of ecological recovery that occurs in an area where a disturbance has destroyed a community but left the soil intact, allowing for the re-establishment of the ecosystem.

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What is genetic drift?

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Genetic drift is a mechanism of evolution that refers to random changes in the frequency of alleles (gene variants) in a population, which can lead to significant changes over time, especially in small populations.

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NGSS.HS-LS4-2

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Define ecocentrism.

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Ecocentrism is an environmental philosophy that places intrinsic value on all living organisms and their natural environment, regardless of their utility to human beings.

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NGSS.MS-LS2-5

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What is the main source of variation that can lead to evolution?

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Mutation is the main source of genetic variation, which can introduce new traits into a population and drive evolutionary change.

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NGSS.MS-LS3-1

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What percentage of energy is available to the next level in an energy pyramid?

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Approximately 10% of energy is available to the next trophic level in an energy pyramid.

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What is natural selection?

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Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring, leading to the gradual evolution of species.

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What is the difference between biocentrism and ecocentrism?

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Biocentrism places intrinsic value on all living beings, while ecocentrism values both living and nonliving elements of ecosystems.

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NGSS.MS-LS2-3

Front

What role do mutations play in evolution?

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Mutations introduce new genetic variations into a population, which can lead to new traits that may be beneficial, neutral, or harmful, influencing the process of natural selection.

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NGSS.MS-LS3-1

NGSS.MS-LS4-4

Front

What is the significance of energy transfer in ecosystems?

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Energy transfer in ecosystems is significant because it determines the structure and function of food webs, influencing population dynamics and ecosystem health.

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Front

What is anthropocentrism?

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Anthropocentrism is an environmental perspective that considers human beings as the central or most significant entities in the world, often prioritizing human needs over ecological health.

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