Seismic P-waves ________ through continental crust relative to oceanic crust.
A. stay the same velocity
B. are refracted
C. are reflected
D. travel slower
E. travel faster
Answer: D
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____________________ fragment about 40% of the world's 237 largest rivers and alter and destroy terrestrial and aquatic habitats by reducing water flow and increasing storm damage.
Fill in the blank(s) with the appropriate word(s).
Transferring genes from a bacteria into rice to boost its vitamin content is an example of
A. cross-breeding. B. reproductive isolation. C. geographic isolation. D. divergence. E. genetic engineering
Freezing nuclei are a part of the _______________ process of forming precipitation
Fill in the blank(s) with correct word
If you are at the beach and blunder into a rip current, how do you get out?
a) Swim really hard toward the beach b) Swim perpendicular to the current until you are out (usually parallel to shore) c) Ride out the current until it dissipates d) Call 911 on your cell phone e) Dive under the current and swim toward shore