(Question)
Q: What type of mining is used to recover ores that are deeper into earth's surface? Choices: - deep mining - explosive mining - underwater mining - underground A:
(Answer)
underground

(Question)
Q: The energy of a wave depends on time as well as what other property of the wave? Choices: - force - power - frequency - amplitude A:
(Answer)
amplitude

(Question)
Q: Population growth is determined by rates of birth, death, immigration, and what else? Choices: - excitation - relaxation - exploitation - emigration A:
(Answer)
emigration