Answer:
They increase the amount of greenhouse gases, causing global warming.
Explanation:
The combustion of fossil fuels comes with a number of problems. First, there is an increase in the carbon footprint. This is basically the increase in the amount of atmospheric carbon dioxide due to human activities like burning fossil fuels. Fossil fuels include natural gas, oil, petroleum, and coal.
These release greenhouse gases, such as methane. These form very reactive radicals that damage the ozone layer resulting in strong and destructive UV rays reaching the earth. In addition, global warming takes place, with an increase in temperature, melting of ice and rising sea levels.
The drilling of oil offshore disturbs the oceanic ecosystem. It pollutes the oceans.
At the same time, it can be an advantage as forests do not have to be destroyed.