You will learn about "Global Warming" in this video. We know that carbon di oxide, methane, nitrous oxide etc are the gases responsible for the greenhouse effect.
However, these days because of increase in pollution, carbon di oxide levels are increasing rapidly. Smoke emitted from vehicles as well as factories contains high levels of carbon di oxide and methane.
Trees are responsible for absorbing carbon di oxide and maintaining its balance in the atmosphere. However, human beings are cutting down trees for roads, buildings etc leading to deforestation. As a result, carbon di oxide balance is not being maintained and the layer of greenhouse gases is becoming thicker. Due to this, the greenhouse gases trap more heat. This results in an increase in average temperature of the earth and the earth becomes hotter and hotter. This is called global warming.
If we do not take steps to reduce global warming, it will lead to loss of humans, plants, animals and our earth will not be a beautiful place to live in anymore.
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