If bubbles cannot escape easily from a magma, the resulting eruption is likely to
A) be explosive.
B) be nonexplosive.
C) produce long, thin lava flows.
A) be explosive.
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A wave-cut platform could be evidence of
A. changing tides. B. longshore current activity. C. lower sea level in the past. D. higher sea level in the past.
This feature in the rock record represents a gap in geologic time caused by removal of some of the rock units.
- Cross cutting relations
- Fossil correlation
- Original horizontality
- Superposition
- Unconformity
Which of the following technologies has seen the lowest use in the U.S. so far for passenger vehicles?
A) hydrogen fuel cell B) ethanol C) hybrid D) electric E) diesel
The difference between open and closed systems is that
A. open systems can acquire matter and energy, but closed systems cannot. B. open systems are not predictable but closed systems are. C. open systems are much simpler in terms of the number of interactions between objects in the system. D. open systems occur on land and closed systems occur in the ocean.