When geologists identify coal, they know the past environment was a(n) ____
a. anaerobic swamp
b. shallow sea
c. aerobic swamp
d. mountain
e. desert
a
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Which of the following properties most clearly reflects the internal arrangement of atoms in a crystalline material?
A. specific gravity B. color C. cleavage D. luster
Which essential gas is often in an unusable form in the ocean and atmosphere?
a. Nitrogen b. Oxygen c. Carbon dioxide d. Methane
Which of the following is TRUE?
A) Natural selection always favors complexity and a larger body size. B) Until recent history, extinctions have always happened gradually and on a small scale. C) Most organisms present early in Earth's prehistory were more complex than modern organisms. D) Species on Earth today are just a fraction of all species that ever lived. E) The number of species existing at one time has decreased throughout history.
What type of plate boundary is associated with orogenesis?
A. advective B. convergent C. divergent D. transform E. strike-slip