Carbon dioxide can be produced from what type of power generation?

solar

hydroelectric

wind

coal

Coal is the correct answer.

As we know all the fossil fuels upon burning produce carbon dioxide but coal produces largest carbon dioxide emissions in the world. The coal is the largest source of power generation in the world and thus the major cause of air pollution.

All the other given options here do not produce carbon dioxide and are environment friendly sources of energy.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

the animal that would be cutest if scaled down to the size of a cat? elephant