The answer is carbon dioxide.
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Answer:
Free nitrogen is simply molecular nitrogen (N2). Nitrogen, in its molecular form, consists of two nitrogen atoms bound together with a tripple bond. ... So basically, any nitrogen that is in an organic compound is considered “fixed” nitrogen and N2 is considered to be “free” nitrogen
Explanation:
All organisms need water to transport chemicals into their cells
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Answer: Prey for the rabbits would decrease greatly; there would be less food for the frogs and voles, so their populations would decrease. This means less food for the foxes and hawks.