What is the cool, rigid, outer layer of Earth that is comprised of continental and oceanic crusts and the uppermost
mantle?
a. Upper mantle
b. Lithosphere
c. Asthenosphere
d. Lower mantle
e. Outer core
b
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Compared to the event horizon, the photon sphere of a black hole is
A. nearer the singularity. B. farther from the singularity. C. at the same location.
The Cambrian explosion refers to ____
a. a meteorite impact b. a sudden appearance of fossils c. a sudden extinction d. the start of evolution e. volcanism that created the Ring of Fire
The principle of crosscutting relationships states that a disrupted pattern is older than the cause of disruption.
Answer the following statement true (T) or false (F)
During a calendar year, the Sun appears to move and stand directly above the Earth's surface between latitudes ________.
A. 9°N and S B. 45°N and S C. 66.5°N and S D. 23.5°N and S E. 90°N and S