(Q).
Q: Where do lightnings build up? Choices: - stratosphere - air - troposphere - clouds A:
(A).
clouds

(Q).
Q: What happens to old oceanic crust at convergent boundaries? Choices: - created - dissolves - emerges - destroyed A:
(A).
destroyed

(Q).
Q: What drives the turbine in a thermonuclear reactor? Choices: - magnets - heated oil - wind energy - heated water or steam A:
(A).
heated water or steam