bio 101 mastering bio chapter 12 – Flashcards
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ecosystem
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all the life living in a particular area together with all the nonliving components
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ecology
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the interactions between living organisms and their environments
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environmentalism
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a philosophical and social movement concerned with preserving the environment
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vegetarians belong to what trophic level
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primary consumers
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All living things need carbon. How does carbon enter the living portion of an ecosystem?
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Atmospheric CO2 taken in by photosynthesis
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All living things need nitrogen. How does nitrogen enter the living portion of an ecosystem?
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Atmospheric N2 taken in by soil bacteria
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Which is the dominant greenhouse gas leading to global warming?
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CO2
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How does an increase in atmospheric greenhouse gases increase global temperatures?
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By preventing some of the heat from escaping the planet's surface
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Why is an estuary considered an intermediate biome?
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It is the transition zone between freshwater and saltwater biomes
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Terrestrial biomes are defined in a large part by
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the plants that live there
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The buildup of soil on bare rock by the decomposition of early colonizers is characteristic of ________ succession
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primary
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What is the name of the theoretical maximum rate of population growth?
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exponential
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Which growth model would you expect to see in a stable population?
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logistic
