(Q).
Q: Acne and different types of cancer can affect what large organ? Choices: - liver - lungs - brain - skin A:
(A).
skin

(Q).
Q: Anaerobic prokaryotes can live without what compound in their environment (it's a compound that people do need to live)? Choices: - carbon - Hydrogen - nitrogen - oxygen A:
(A).
oxygen

(Q).
Q: What does fog consist of? Choices: - helium - steam - carbon monoxide - droplets of water A:
(A).
droplets of water