How are fossil fuels mined

Extracting fossils fuels.Mining is used to extract solid fossil fuels such as coal by digging scraping or other wise exposing buried resources.Drilling methods help extract liquid or gaseous fossil fuels that can be forced to flow to the surface such as conventional oil and natural gas

Drilling methods help extract liquid or gaseous fossil fuels that can be forced to flow to the surface, such as conventional oil and natural gas.

D.haka is the first answer and a.canberra is the second answer

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.