Global Warming: Causes

What are the natural and human causes of global warming?



Milankovitch cycles – Changes in the Earth’s axis and orbits.

Methane from animals or paddy fields

Angle of the Earth and axial tilts

Burning fossil fuels

Orbit shape around the sun


Changes in sun’s radiations – Sun spots increase radiation and there are natural fluctuations in solar output

CFCs (chloroflurocarbons) – From fridge and aerosols 

Volcanic eruption –  These can cool global temperatures so the lack of them can increase eruptions.

Nitrous oxides from fertilisers and industrial activities.

Cosmic collisions – These can increase the amount of CO2 in the atmosphere