Ecosystem Ecology - Biology 2

Water is lost to the abiotic parts of the biosphere from the biotic parts by _____.

• precipitation

• photosynthesis

• transpiration

• infiltration

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Nitrogen is released to the abiotic parts of the of the biosphere from the processes of death and ____.

• decay by bacteria

• infiltration of the groundwater

• runoff

• lightning in the storm and clouds

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Carbon dioxide in the atmosphere enters the biotic parts of the biosphere through _____.

• burning of forests

• photosynthesis

• combustion of fossil fuels

• all of these

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cougars are predators that often eat weakened or diseased animals. this is a description of the ___ of cougars.

• habitat

• community

• niche

• none of these

An ecologist who studies how several species in an area interact with one another and with the abiotic parts of the environment is interested in the biological organization level called a(n) _____.

• organism

• population

• community

• ecosystem

Parasitism, mutualism, and commensalism are examples of _______.

• food chains

• food webs

• symbiosis

• trophic levels

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Both the alga and the fungus are benefited from their relationship in a lichen. This relationship is one of ______.

• coomensalism

• mutualism

• parasitism

• symbolism

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Before plants can reuse many organic materials, the materials must be broken down by _______.

• parasites

• viruses

• decomposers

• scavengers

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study of how living things relate to each other and their environment

• evolution

• ecology

• parasitology

• ethology

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relationship between organisms in which both organisms benefit

• parasitism

• commensalism

• symbolism

• mutualism

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