The top three most efficient fuels, based on energy content and efficiency in energy conversion, are hydrogen, natural gas, and nuclear energy. Hydrogen has a high energy density and produces only water when burned, making it environmentally friendly. Natural gas is favored for its high efficiency in power generation and lower carbon emissions compared to coal and oil. Nuclear energy provides a substantial amount of energy with minimal greenhouse gas emissions, though it involves concerns regarding waste and safety.
Oil Coal Gas
I think America russia and china
The top 3 continents with the most population are Asia, Africa, and Europe.
It appears to be the base-3 system.
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 top 3 is soccer volleyball and swimming
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 3 type fossil fuels are coal,oil and natural gas
bumpoowee
water oil
3
1.Soccer 2.Basketball 3.Handball