Which of the following correctly describes a proton?
A) on the scale of subatomic particles it is massive and has a +1 charge
B) on the scale of subatomic particles it is massive and has a -1 charge
C) on the scale of subatomic particles it is light and has a +1 charge
D) on the scale of subatomic particles it is light and has a -1 charge
A
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Of all the human-caused gases, which gas makes the greatest relative contribution to increasing the greenhouse effect?
a) hydrogen b) methane c) carbon dioxide d) oxygen e) ozone
In confined aquifers the water is under pressure and rises to a level above the top of the aquifer.
Answer the following statement true (T) or false (F)
Microscale circulations range from a few kilometers to about a hundred kilometers in diameter
a. True b. False
Matching
1. On the generalized population age structure figure, choose the diagram with similar numbers of males and females in prereproductive and reproductive categories. 2. On the generalized population age structure figure, choose the diagram with demographic momentum. 3. On the generalized population age structure figure, choose the diagram that represents a population that is increasing slowly. 4. On the generalized population age structure figure, choose the diagram that shows a declining population.