Oil Coal Gas
It appears to be the base-3 system.
I think America russia and china
The top fuel efficient cars is the smart car, and electric cars. My personal favourite is the Nissan Versa. Its small on the outside, but has the perfect amount of room. Its a good car, you can go 2-3 days on a full tank!
The top 3 means most popular, favorite, or highest ranked. For instance, the top 3 music, would be the ones that people enjoy the most and received the most number of hits.
the 3 type fossil fuels are coal,oil and natural gas
the top 3 is soccer volleyball and swimming
3
water oil
bumpoowee
1- No direct output of polluting emissions ( though the production of solar panels emits CO2 and is costly and materials' intensive) 2- almost zero running cost ( free energy), yet expensive to manufacture, and occupies huge amounts of land and is not efficient. 3- Renewable and that is it: the advantages of fossil fuels over solar energy outweigh the adv. of solar over fossil fuels. for instance, 1- fossil fuels are abundant, cheap, reliable, have been integrated to our energy consumption systems for decades 2- they are mobile 3- very high energy density, each kg of fossil fuels can generate millions of KJ
PLay on the computer, get hobby from the hobby shop are the most efficient