Green house effect

Meaning ___GREEN House is made of gases like carbon dioxide, methen , nitrous oxide this layer is naturally present in the atmosphere . Function___when sunrays are coming on the Earth they reflect means bouncing back again when they goes back their heat is trapped by this green layer to make our earth warm . Means the suitable temperature to live on earth is possible only because of green layer Imagine if this layer is not present in the atmosphere, the temperature of the Earth goes down in minus degree which is not sustainable