Features associated with ancient continental rift zones include andesite volcanoes and strike slip
faulting. Indicate whether the statement is true or false.
F
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Which portion (NW, NE, SE, or SW) of the map has the greatest relief?
Use Figure 23.3 to do the following work and answer the question.
What will be an ideal response?
How does the ionosphere affect GPS?
A) GPS satellites orbit the Earth in the ionosphere. B) GPS ground stations lose contact with geosynchronous satellites orbiting near the poles. C) GPS signals much pass through the ionosphere, whose gases weaken the signal. D) Positively charged ions in the ionosphere speed up the GPS signal, causing signal error.
RNA polymerase I (pol I) catalyzes the formation of which type of RNA?
A) mRNA B) rRNA C) snRNA D) tRNA
Assume that water filling a crack in a rock undergoes cycles of freezing and melting. Which of the following statement is true?
a. Water shrinks as it melts, causing the crack walls to be pulled closer together. b. Water expands as it melts, causing the crack walls to be pushed apart. c. Water shrinks as it freezes, causing the crack walls to be drawn closer together. d. Water expands as it freezes, causing the crack walls to be pushed apart.