Which of the following minerals can act as cement for clastic sedimentary rocks?
a. Calcite (CaCO3)
b. Graphite (C)
c. Dolomite (CaMg[CO3]2)
d. Silica (SiO2)
e. both a and d
Answer: e. both a and d
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Aspirin and other NSAIDs do which of the following?
A) inhibit both COX-1 and COX-2 activity B) inhibit only COX-1 activity C) inhibit only COX-2 activity D) none of the above
Why is it so difficult for wind to pick up clay-sized particles?
A) They are too large for the wind to carry. B) The wind has a near-zero velocity closest to the surface and can't pick them up. C) The clay particles are often buried under larger sediments. D) There is too much clay to carry.
You're napping on the sand while a breeze blows by at 1 m/s. If a pesky sandflea wishes to land on you, it should hover over you while flying
A. with the breeze at 1 m/s. B. against the breeze at 1 m/s. C. faster than 1 m/s but less than 2 m/s. D. about 2 m/s relative to the breeze.
Annual temperature range:
