An instrument that measures seismic waves continuously at all magnitudes is a(n):
a. accelerograph
b. seismograph
c. seismogram
d. magnetometer
b
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Define water pollution, point source, and nonpoint source pollution. Which of the two (point source or nonpoint source) is easier to identify? Which is easier to legislate? Which currently poses the greatest threat to fresh water?
What will be an ideal response?
Along the boundary between continental polar and maritime tropical air masses, widespread precipitation and storminess is often found
a. True b. False
The ________ is the current interglacial period and began about 10,000 years ago
A) Triassic B) Holocene C) Cretaceous D) Pleistocene E) Jurassic
There is very little that a person can do to help control the spread of exotic species.
Answer the following statement true (T) or false (F)