Directions: Arrange the jumbled letters by referring to the given description. 1. ATOMSPEHRE It is the envelope of air that surrounds the Earth. 2. X B 0 SP : S B R It is the upper layer of our atmosphere. 3. R GEEN O HUS EFFE ETC It is a natural process by which the Earth's atmosphere warms up. 4. RAI It refers to the mixture of gases in the atmosphere. 5. ROOTPP HERE Weather occurs in this layer of the atmosphere.