Mr. Olson 5th Grade Chap 2 D
Help!
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| When nitrogen is "fixed" what is it changed into? | nitrogen compounds
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| What process breaks down carbon compounds in the carbon dioxide-oxygen cycle? | cell respiration
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| Overlapping food chains form what? | food webs
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| In the nitrogen cycle, what is converted to a usable form? | nitrogen gas
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| What do sewage treatment plants clean up? | waste water
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| What compounds act as the building blocks of living things? | proteins
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| What is the process by which water vapor is changed to liquid water? | condensations
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| The flow of energy from one organism to another is called a ____________. | food chain
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| What kind of consumers are most humans? | omnivores
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| The process by which water changes to water vapor is called what? | evaporation
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| The organism that breaks things down in a food chain is called what? | decomposer
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| Give an example of a producer. | plant
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| Nitrogen is made usable by bacteria that grows on the roots of _________. | plants
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| During photosynthesis plants give off what as a waste product? | oxygen
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