Which of the following has existed unchanged from the time of the Earth's formation to the present?
A. the atmosphere
B. the sea floor
C. continents
D. None of the choices are correct.
Answer: D
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Soil texture influences ________
A) pH B) tilth C) bedrock geology D) nutrient content E) color
Drainage density is determined by
A) dividing the number of streams in a basin by the basin area. B) dividing the actual path length of a stream by the shortest path length of the stream. C) averaging the discharge values across a drainage basin. D) dividing the total length of all stream channels in the basin by the area of the basin.
NEO hunters are not actively searching for smaller objects that could destroy entire cities, but instead are focused on detecting larger objects that could threaten entire countries or continents.
Answer the following statement true (T) or false (F)
Which of the following describes the degree to which geologic processes have concentrated a mineral resource above its average concentration in Earth's crust?
A. enrichment factor B. geologic factor C. concentration level D. relative abundance E. economic potential