What substances are used up as the reactants in cellular respiration? 1: o2 and h2o 2: o2 and c6h12o6 3: co2 and c6h12o6 4: co2 and h2o

The correct answer should be 2) O2 and C6H12O6 (Oxygen and Glucose)
I hope this helps.
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Hi.

The reactants in celluar respiration are oxygen & glucose.

This means the answer is 

2: O₂ + C₆H₁₂O₆

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Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.

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