(Question)
Q: What always has the same elements in the same ratio? Choices: - component - cell - mitochondria - compound A:
(Answer)
compound

(Question)
Q: What are surface currents generally caused by? Choices: - minor wind belts - major humidity belts - major steam belts - major wind belts A:
(Answer)
major wind belts

(Question)
Q: In an electromagnetic wave, what do the crests and troughs represent? Choices: - vibrating fields - ocean waves - particles fields - oscillating fields A:
(Answer)
oscillating fields