The causes of Global Warming

Natural causes
-Arctic Tundra and wetlands release a type of gas called Methane. Methane is a Greenhouse Gas and traps heat in the Earth's atmosphere.
-Earth goes through a climate change. This climate change season usually lasts 40 000 years.

Man-introduced causes
-Pollution: Man pollute the Earth with fossil fuels. When these fossil fuels are burnt, they emit a gas called Carbon dioxide. Sadly, carbon dioxide is also a Greenhouse Gas.
-Population: As the population increases, more agriculture will have to be grown. That means more burning of fossil fuels. As more carbon dioxide is emitted, these are causing the increase in Earth's heat.
The problem is made worse as we exhale carbon dioxide. And the increase in population only means an increase in output of carbon dioxide.