The Greenhouse Effect and Ozone Depletion are rapidly growing threats to the Earth. The Greenhouse Effect is when carbon dioxide levels rise causing more heat to be let in throwing off the ecosystem, and Ozone Depletion happens when chemicals in the air to break apart part of the Atmosphere which keeps out UV rays.
             The main chemicals which are causing the Greenhouse effect are CO2(carbon dioxide?, N2O(nitrous oxide), and CH4(Methane). Small amounts of these chemicals help keep the heat in the air and atmosphere up. But when the chemical amounts rise so does the temperature of the air and Earth causing disruption in the plant ecosystem. The Chemicals causing Ozone Depletion come from man-made products and get trapped in the region of atmosphere called the Ozone Layer. And when chlorofluorocarbons, or CFC's, get trapped in the Ozone, they react with the Ozone Layer when hit by sunlight. Both chemicals are on the increase of man-made objects.
             The normal state of Greenhouse Effect happens when heat from the Earth rises back towards the sun and gets trapped by the CO2 in the Earth bringing heat and energy to the Earth that plants and animals rely on to stay natural due to the way they've evolved to the atmosphere. The Ozone Layer is a very big worry because it is the part of the atmosphere that blocks the UV rays from the sun that cause people skin cancer, cataracts, effects the immune system, and damages crops. The Ozone traps in the UV rays from the sun only deflecting enough to keep the earth safe. But chemicals destroying that help destroy the Atmosphere and Earth life.
             The major causes of the Enhanced Greenhouse Effect are caused by the burning of gasoline in cars which has high levels of carbon dioxide in the exhaust, chemicals that are burnt by factories and released by the huge smoke stacks releasing smoke seeable by miles away are also very high in c
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