The rocks of the core consist mostly of ________
Fill in the blank(s) with correct word
iron
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An area of forest that is repeatedly clear-cut and replanted in order to provide commercial wood products is called a(n)
A. old growth forest. B. tree farm. C. pulp mill. D. second growth forest. E. virgin forest.
It takes 6 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft?
A) about 60 m B) about 120 m C) about 180 m D) more than 200 m
The processes of condensation and freezing:a
both release sensible heat into the environment. b. both absorb sensible heat from the environment. c. do not affect the temperature of their surroundings. d. do not involve energy transport.
Most of the Moon's craters were produced by ________
A) radial implosions B) faulting C) the impact of meteoroids D) volcanic eruptions