(Question)
Answer the following question given this paragraph: A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds. Q: What always has the same elements in the same ratio? Choices: - component - cell - mitochondria - compound A:
(Answer)
compound

(Question)
Answer the following question given this paragraph: Like air in the atmosphere, ocean water moves in currents. A current is a stream of moving water that flows through the ocean. Surface currents are caused mainly by winds but not daily winds. Surface currents are caused by the major wind belts. These winds blow in the same direction all the time. So they can keep water moving in the same direction. 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)
Answer the following question given this paragraph: The black line represents the straight path of the light itself. Along this path, there exists an electric field that will reach a maximum positive charge, slowly collapse to zero charge, and then expand to a maximum negative charge. Similarly, there is an changing magnetic field that oscillates from maximum north pole field to maximum south pole field. Along the path of the electromagnetic wave, these changing fields repeat, oscillating over and over again. However, the oscillating electric and magnetic fields demonstrate a weaving pattern that is not the way light travels. For an electromagnetic wave, the crests and troughs represent the oscillating fields, not the path of the light. 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