1
One of the main negative side effects of fossil fuels
2
Final stage of fossil fuel formation
3
Fossil fuel which is extracted from bitumen
4
One of the uses of petroleum
5
A liquid hydrocarbon
6
Place where bitumen is found
7
Fossil fuel with a low carbon hydrogen ratio
8
A domestic use of gas
9
A fossil fuel which is formed from the decay of vegetative matter such as plants, tree, etc.
10
Hydrocarbons which are derived from marine fossil fuel sources such as plankton decays and algae
