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Earth's rotation cause the global convention current between the equator and the poles

Evaporation: this is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas). water vapour droplets join together to make clouds! condensation: this is when water vapour in the air cools down and turns back into liquid water.

Abbreviated as mg-25.

The mass has escaped into a gas which you can not see so the law stays true.