Question

What is global warming? Write any two causes of global warming.

Answer 1

The rise in temperature of Earth's atmosphere due to trapping of heat, is called as global warming. The greenhouse gases like carbon dioxide, ozone, methane holds the heat in atmosphere. If amount of these gases in atmosphere increases, then more heat is held in atmosphere.

Causes of global warming:
1. Air pollution leads to increase in greenhouse gases.
2. Deforestation leads to release of carbon dioxide.