The only biogeochemical cycle of any significance is the carbon cycle.
a. true
b. false
Answer: b. false
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What is the atomic number of the element produced when an element with atomic number Z undergoes electron capture?
A) Z __ 2 B) Z __ 1 C) Z + 1 D) Z + 2
Although convection in the asthenosphere is widely accepted as the cause of plate movements, it may be that the weight of down-going lithosphere in subduction zones pulls the trailing plate behind it.
Answer the following statement true (T) or false (F)
The area within 200 nautical miles of its shoreline to which the U.S. claims all mineral resources is called the ____
A)Continental Shelf B)Marginal Marine Territory C)Exclusive Economic Zone D)Marine Mineral Territory E)Marine Mineral Zone
Tuberculosis is caused by ____.
A. mosquitoes B. flies C. viruses D. bacteria E. protozoa