Exam 10: Cycles and Patterns in the Biosphere

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Denitrification converts nitrates into free oxygen in the atmosphere.

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The following element(s) has (have) a sedimentary cycle.

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Animals subsisting on smaller animals are called primary consumers.

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The study of living organisms is more complex than the study of inorganic phenomena.

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Which components are necessary for photosynthesis to occur?

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Encompassed in life, water is classified as in transit or ________.

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Photosynthesis is a main means of fixing ________ in the ecosystem.

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Animals or plants living on the sea bottom are ________.

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Concerning the biosphere, the geographic viewpoint is most often concerned with ________.

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The bottom link in the food pyramid consists of organisms called benthos.

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Planetwide, a balance of chemicals is maintained by ________.

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Animals which eat plants are also known as ________.

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________ is the term for the physical amount of plant material at a location.

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The most powerful predator in a given area sits atop the local food pyramid.

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Of the total solar energy reaching the Earth, ________ percent is fixed by photosynthesis.

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Most atmospheric free nitrogen is cycled to Earth by means of ________.

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Which of the following is NOT an example of climatic influence on the biosphere?

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The food chain is a valuable concept in biogeography. Give an example of a specific food chain, labeling the various levels of the food chain.

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In the concept of the food chain, the fundamental unit consists of ________.

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In the United States, biofuels have gained great political and economic momentum because they

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