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Science Q3 Sief p3

Atmosphere The layers of air that surrounds Earth
Air pressure The weight of a volume of air pressing down on a unit of area
Relative humidity The ratio of the actual amount of water vapor the air to the total amount of water vapor the air could contain at that temperature
Front The boundary between two air masses that collide
Climate The average of all weather conditions in an area over a long time
Created by: mohamedelhussien