Phytoplankton use all of the following as part of the cell structure except ________.
A. cellulose
B. iron
C. calcium carbonate
D. silica
Answer: B
Environmental & Atmospheric Sciences
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Fortunately for life, oxygen levels in the atmosphere have been stable over Earth’s history
a. True b. False
Environmental & Atmospheric Sciences
The Glacier Park, Montana area, provides a classic example of large scale ________
A) flood basalts B) transcurrent faulting C) graben structure D) overthrust faulting E) horsts
Environmental & Atmospheric Sciences
Compared to today, sea level 125,000 years ago (in an interglacial part of the Pleistocene) was ________
A) lower B) higher C) about the same D) lower by more than 100 meters E) static (all the water was frozen)
Environmental & Atmospheric Sciences
Important tools in prairie restoration include
A. fire and bison. B. fire. C. volcanic eruptions. D. bison.
Environmental & Atmospheric Sciences