The first step begins with: A. the mouth.
Answer:
Solar energy, Wind energy, Geothermal energy, Hydroelectric energy.
Explanation:
Have a nice day!
Unfortunately no, my friend is not correct. The CO2 pollutants leaving his exhaust are warm, yes, but that is why our atmosphere is creating global warming which is affecting climate in all regions. When there is more people that means more cars and more pollutants being dispersed into our atmosphere.