If the half-life of carbon-14 is about 5,700 years, then of a given starting quantity, after 22,800 years (four half-lives), what fraction of the original amount will be left?
A. none
B. 1/8
C. 1/4
D. 1/16
Answer: D
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Which site will most likely experience rapid erosion?
A) 1, cliffs composed of hard rocks
B) 2, sediments in a delta
C) 3, the seafloor deep beneath the waves
D) 4, the coastline of a bay
E) 5, the coastline in a branching embayment
According to Figure 19.25, the largest volume of sediment removed from this section of beach in central California comes from
A) longshore current. B) wind transport. C) coastal erosion. D) river transport.
What are the major differences between the French-inspired long lot system in Quebec and the English-inspired metes and bounds system more commonly used in the New England colonies?
What will be an ideal response?
Approximately what percentage of insolation arriving at the top of the atmosphere is eventually absorbed by the ground?
A. 40% B. 50% C. 70% D. 20%