Answer:
Humans, Humans, Humans. We are the main cause.
Explanation:
jk.
Global warming is an aspect of climate change, referring to the long-term rise of the planet's temperatures. It is caused by increased concentrations of greenhouse gases in the atmosphere, mainly from human activities such as burning fossil fuels, and farming.
Burning coal, oil and gas produces carbon dioxide and nitrous oxide.
Cutting down forests (deforestation). ...
Increasing livestock farming. ...
Fertilisers containing nitrogen produce nitrous oxide emissions.
Fluorinated gases are emitted from equipment and products that use these gases.