The principle of ________ states that fragments included in a host rock must be ________ than the host rock.
A. inclusion; younger than
B. inclusion; the same age as
C. intrusion; younger than
D. inclusion; older than
E. intrusion; older than
Answer: D
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Which is the largest way that we are altering the carbon cycle?
A. Burning fossil fuels to make electricity. B. Making fertilizer out of atmospheric gases. C. Mining ocean sediments for phosphorus. D. Filling in natural wetlands.
What planet/feature marks the division between the terrestrial planets and the Jovian planets?
A) Kuiper Belt B) Jupiter C) Neptune D) Asteroid belt
The fact that one side of the Moon always faces Earth is evidence that while revolving about the Earth, it
A. rotates about its axis. B. does not rotate about its axis.
The earliest known hominid fossils are from rocks that are
a. 1.5 million years old. d. 4 million years old. b. 10,000 years old. e. 7 million years old. c. 700,000 years old.