Air and Water

Living things give out a gas called ... during respiration. (carbon dioxide/ oxygen/ nitrogen/ hydrogen)

What is the process during which water changes from a liquid to a gas as it heats up? (Condensation/ Infiltration/ Precipitation/ Evaporation)

What is the process during which water cools and turns from a gas to a liquid? (Condensation/ Infiltration/ Precipitation/ Evaporation)

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