What must be true of a rock unit that is cut by an igneous intrusion?
A. The rock unit is younger than the intrusion.
B. The rock unit is the same age as the intrusion.
C. The rock unit is older than the intrusion.
Answer: C
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The nineteenth-century French approach of possibilism stated that
A) environmental change is not possible. B) the environment sets limits on what is feasible but does not dictate a culture's choices. C) people should adopt practices that do not harm the environment. D) the environment determines cultural characteristics.
A small residential pond in the middle of an urban housing development is most likely
A) a natural pond that happened to be in the region where the homes were built. B) part of a storm-water management system, to reduce erosion from runoff. C) constructed specifically as a source of water for people to use to irrigate their lawns. D) part of the sewage treatment facility that serves the homes in this region.
What is the most likely cause of the mantle seismic velocity transition zones at 410 and 660 kilometers?
What will be an ideal response?
How does hail form? What factors govern the ultimate size of hailstones?
What will be an ideal response?