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Food chains and food webs are used to describe energy transfers
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Sydney drew a flow chart to illustrate the nitrogen cycle. which labels best complete the flow chart? x: producers undergo photosynthesis. y: nitrogen compounds are released into the air. x: nitrogen compounds are released into the air. y: producers undergo photosynthesis. x: free nitrogen is in the atmosphere. y: producers absorb nitrogen compounds through their roots. x: producers absorb nitrogen compounds through their roots. y: free nitrogen is in the atmosphere.
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Biology, 22.06.2019 10:40, karlyisaunicorn
Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above
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Food chains and food webs are used to describe energy transfers...
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