Well some can be the types of food they eat
If I'm not mistaken, the correct answer would be India.
B) the doldrums has very calm or no winds year round and ships that were powered by sail could be trapped for days or even weeks
when two air masses coming together the boundary between the two is called a weather front
Based on the information I was able to find I would say "Natural gases".
This is due to the reason it is burned to create heat for buildings which are used for several things we do daily such as cooking, heating, and electricity.
