Question

Which of the following describes an example of an energy resource that does not pollute the air with greenhouse gases?

A. Biomass energy which is generated by burning wood or garbage
B. Hydropower which transforms the energy of flowing water into useable electricity
C. Natural gas which is found trapped in sedimentary rock deposits
D. Nuclear power which is generated by nuclear fission or fusion

Answer 1

Which do you think it is?

Answer 2

I have really no idea. C maybe?

Answer 3

I think it's a poorly worded question.

Greenhouse gasses are given off when carbon containing compounds are produced by combustion of carbon containing fuel. In this case, that happens only when biomass (carbon containing compound) is burned and when natural gas (which basically means methane, another carbon containing compound) are burned.

So the correct answer could be either B or D.

Neither B nor D is environmentally friendly. The nuclear option produces spent nuclear fuel which is about as bad for life as any substance can be. And B, building dams, destroys entire ecosystems on the rivers on which they are installed...

Answer 4

Alright, thanks(: I don't understand a majority of the questions on this exam unfortunately. They're all worded oddly.

Answer 5

Good luck with your test. :D

Answer 6

As blues said, neither B nor D produce "greenhouse gases". However, I assume that only one of these can be true, and generally speaking an uninformed person might be under the impression that nuclear facilities produce greenhouse emissions (which is false, by the way).

So I'm going with B.