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Human causes:
Increased industry = more factories releasing greenhouse gases
Higher population = more people using cars and electricity/gas adding to each individuals carbon footprint.
Increase in livestock production to help feed the growing population = less trees because they have been cut down for grazing land and also more animals releasing green house gases as well.

Physical factors 
Volcanic eruptions = a release of green house gases adding to the green house effect
Volcanic eruptions can also lead to global cooling when they erupt a large amount of ash into the atmosphere which lowers the amount of suns rays entering the atmosphere and reflects it having a cooling effect.
Milankovitch cycles = Earths axis has a wobble which effects the seasons (cooler or hotter), earths orbit around the sun can become more elliptical and so the earths position maybe be further from the sun than normal meaning cooler and then closer to the sun at other points meaning warmer.
Any questions let me know 😊

Science

Evaluate the human and natural causes of climate change. (9 marks)

Talking about energy such as oil/gas can be because the energy demand has exceeded the supply capabilities of the country and it needs to get it elsewhere to make up for the difference. 
The country may lack natural resources and doesn’t have any reserves to sustain it and the only option is too import it.
In the case of the UAE there supply far exceeds their need so they can export it at a cheap price. This price then might be more affordable for a country to import it rather than produce its own.

Alexander Taylor

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University of Portsmouth

Luton sixth form

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Alexander Taylor