7) How do nitrogen-fixing bacteria help cycle
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nitrogen through ecosystems?
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A. They change nitrogen into forms usable by
plants
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1950
B. They convert water and carbon dioxide into
sugar
C. They release the chemical energy in nitrogen for respiration
D. They convert sunlight into chemical energy stored in nitrogen
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Cassandra made a venn diagram to compare and contrast the two stages of cellular respiration. which belongs in the area marked x? energy is released. oxygen is used up. glucose is broken down. carbon dioxide is used up.