The horizon identified as regolith (weathered bedrock and parent material) is the ________ horizon
A) B B) O C) A D) C E) E
D
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Maps are "social products," and are socially constructed. This refers to the
A) buildings, monuments and other cultural features and sites on them. B) power of the people who draw them. C) relationships between the different culture groups represented on maps. D) interrelationships between places on maps. E) map projection.
It is theorized that a pulsar only emits X-rays and visible light during its early history. What do you suppose is the basis of this theory?
A. As the pulsar's energy dissipates, the frequency of the energy it emits drops. B. X-rays are likely the result of radioactive decay, which only can occur in a pulsar's early history. C. The pulsar's high rate of spin produces a magnetic field that, over time, slows the pulsar down. D. X-rays and visible light are both part of the electromagnetic spectrum.
Some of the dominant marine reptiles of the Mesozoic were reptiles whose ancestors had evolved on land, but returned to life in the sea. What physiological evidence supports this interpretation?
What will be an ideal response?
Which of the following does not describe the number of other atoms a carbon atom can be bonded to?
A. only 5 B. only 2 C. only 3 D. only 4