What is global warming? Write the cause of global warming?

Question Id: BIO000001

Question: What is global warming? Write the cause of global warming?

Answer: 

Rising average air temperatures near Earth’s surface is known as global warming. It causes heating on earth surface and ocean. Due to rising of heat, ice of north and south pole and the Himalaya are melting. It causes rising height of sea level is increasing. It is very dangerous for the earth, the ecosystem of the earth is in danger.

Fig-1: global warming

Causes of global warming:
Global Warming is caused by many things. The causes are divided into two groups, man-made or anthropogenic causes, and natural causes.

1. Natural Causes: Natural causes are causes created by nature. One natural cause of global warming is a release of methane gas from arctic tundra and wetlands. Another natural cause of global warming is that the earth goes through a cycle of climate change.
2. Man-made Causes: the man made cause of global warming are CO2 from power plants, pollution emitted from cars, pollution from Trucks, pollution from Aeroplanes, Methane emissions from animals, agriculture such as rice paddies, increase in usage of chemical fertilizers on croplands, population growth, use of CFC’s etc.