Underground mining is the most hazardous occupation in the United States.
Answer the following statement true (T) or false (F)
True
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Deep water is colder than surface because:
A. Deep water cools where there is no sunlight B. Hydrothermal vents keep it cool C. Water sinks, then cools D. It gets cold at the surface, then sinks E. All of the abovef
One major way in which chlorofluorocarbons can enter the stratosphere is ____
A) from the exhaust of high-altitude aircraft B) in an inversion C) in building thunderstorms that penetrate into the lower stratosphere D) from the rupture of radiosonde balloons
Composite cones typically are associated with what type of plate tectonic feature?
A) mid-ocean ridge B) hot spot C) continental collision zone D) subduction zone
DNA sequencing technology has improved biologists ability to understand ancestral relationships among different kinds of life.
Answer the following statement true (T) or false (F)