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Subject:

(also called a water cycle) the cycle of evaporation and condensation that controls the...

Subject:

water sources dry up and there is less underground water

the molecule is split by the addition of a water molecule

Subject:

an enzyme that catalyses (speeds up) the hydrolysis (breaking) of a chemical bond.

a proton that forms a co­ordinate covalent bond with a water molecule H3O+

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