An example of a hard, compact, very fine-grained (can be chemical or biochemical) sedimentary rock composed entirely of silica is ____
a) Tuff
b) Chalk
c) Chert
d) Travertine
e) Claystone
Answer: c) Chert
Environmental & Atmospheric Sciences
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Water use in the High Plains (Ogallala) aquifer system has been severely constrained by a series of restrictive state and federal laws to reduce pumping.
Answer the following statement true (T) or false (F)
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The energy resource shown in this figure to have most decreased in use is
A) nuclear power. B) wood. C) petroleum. D) coal. E) natural gas.
Environmental & Atmospheric Sciences
Where are deaths from indoor smoke most likely?
A) South America B) North America C) Australia D) Asia E) Africa
Environmental & Atmospheric Sciences
What do climate models predict will happen to average temperatures in the southern hemisphere over the next 100 years?
A. Temperatures will increase B. Temperatures will stay about the same C. Temperatures will decrease
Environmental & Atmospheric Sciences