(Question)
Q: Motor vehicles account for almost half of the consumption of what? Choices: - hydrocarbon - greenhouse gases - electricity - fossil fuel A:
(Answer)
fossil fuel

(Question)
Q: In the radiative zone, light particles called what can only travel a few millimeters before they hit another particle? Choices: - electrons - positrons - neutrons - photons A:
(Answer)
photons

(Question)
Q: What are the two main parts of the human nervous system? Choices: - lungs, brain - lungs, spinal cord - brain, heart - brain, spinal cord A:
(Answer)
brain, spinal cord