________ bonding is the sharing of valence atoms between a pair of atoms
A) Ionic
B) Metallic
C) Hydrogen
D) Covalent
Answer: D
Environmental & Atmospheric Sciences
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What energy source causes the most air pollution per unit of energy produced?
A. coal B. natural gas C. uranium D. gasoline
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________ are erosional features produced by valley (alpine) glaciers
A) Moraines B) Cirques C) Eskers D) Drumlins
Environmental & Atmospheric Sciences
As it pertains to differences in land-water heating, transparency
A) is greater in land than water. B) refers to the fact that land is opaque and water is transparent. C) produces a heat loading at the surface of water bodies. D) produces a photic layer that normally is 2000 m (6600 ft.) deep.
Environmental & Atmospheric Sciences
The ammonium ion has the formula NH4+. How many electrons must be shown in the Lewis structure of the ammonium ion?
A) 4 B) 5 C) 8 D) 9
Environmental & Atmospheric Sciences