Wave frequency is the number of waves passing a fixed point per second
a. True
b. False
True
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Adding more carbon dioxide to the atmosphere causes the concentration of carbonates in the ocean to
A. stay the same because of a positive feedback mechanism. B. increase. C. stay the same because of a negative feedback mechanism. D. decrease.
What is the distinctive type of agriculture practiced in the dry lands of developing countries?
What will be an ideal response?
The distance between a seismological recording station and the earthquake source is determined from the ________
A) earthquake magnitude B) intensity of the earthquake C) length of the seismic record D) arrival times of P and S waves
In which biogeochemical cycle is the namesake element deposited in rock and exists as a gas where it influences the greenhouse effect?
A. nitrogen cycle B. oxygen cycle C. carbon cycle D. water cycle E. rock cycle