(Question)
Answer the following question given this paragraph: Underground mining is used to recover ores that are deeper into Earth's surface. Miners blast and tunnel into rock to gain access to the ores. An underground ore deposit can be approached from above, below, or sideways. The direction depends on the placement of the ore body, its depth, the concentration of ore, and the strength of the surrounding rock. An example of an underground mine can be seen below ( Figure below ). 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)
Answer the following question given this paragraph: The energy effects of a wave depend on time as well as amplitude. For example, the longer deep-heat ultrasound is applied, the more energy it transfers. Waves can also be concentrated or spread out. Sunlight, for example, can be focused to burn wood. Earthquakes spread out, so they do less damage the farther they get from the source. In both cases, changing the area the waves cover has important effects. All these pertinent factors are included in the definition of intensity I as power per unit area:. 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)
Answer the following question given this paragraph: Population growth is determined by rates of birth, death, immigration, and emigration. Q: Population growth is determined by rates of birth, death, immigration, and what else? Choices: - excitation - relaxation - exploitation - emigration A:
(Answer)
emigration