True: Primative atmosphere has no oxygen, Nitrogen in the air is 78%, Nitrogen is ordourless, Ionosphere is the farthest, Mesosphere contains clouds and dust, Humidity, cloud, precipitation, wind, temperature make up the weather, At the top of the mountain, the pressure is LOWER THAN at the sea level, CFCs is from the frigde or aerosols, Harmful radiation can go through the hole in Ozone layer, SO2, CO2, NO2, etc. are pollutant gases, Travel by bike to save the air, Freshh water is 3% on Earth, Water attrachted to water is cohesion, Fresh water is less salt than sea water, False: The present atmosphere has no gases, Ozone layer destroys life, Oxygen is white, The Earth atmosphere has 3 layers, Troposphere is the farthest, Ozone layer is in the Ionoshpere layer, Oxygen mixes with Nitrogen to make the acid rain, Fossil fuel is solar energy, wind energy,etc., Greenhouse is like a brick wall, Less CO2, more global warming, Cut the trees to save the air, Fresh water is in the ocean, Lower the depth in ocean, higher the temperature, Waves, wind, tides are movement of ocean,

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