In 2009, the G-20 nations agreed to ________
A) increase subsidies to fossil fuel industries by 10-12%
B) double the subsidies to fossil fuel companies
C) set a goal to produce 60% of their energy from clean, renewable sources by 2030
D) postpone developing renewable energy resources until 2050
E) gradually phase out their fossil fuel subsidies
E
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The electric field about a proton decreases in magnitude
A. via the inverse-square law. B. when between oppositely charged parallel plates. C. in linear fashion. D. none of the above
Find the word “South” in the label for the “South Sawyer Glacier” (in the east central part of the map). Assume that the rate of movement of this glacier is 9 inches (22 cm) per day (a hypothetical rate). How long would it take the ice to move from the location marked by the “S” in the word “South” to the water of the Tracy Arm? It may be easiest if you determine the distance in inches or centimeters, rather than in feet, miles, or kilometers.
The following questions are based on Map T-14, the “Sumdum (D-4), Alaska” quadrangle (scale 1:63,360; contour interval 100 feet). The map shows two glaciers entering the “Tracy Arm.” The Tracy Arm is a fjord just south of Juneau, Alaska (see Exercise 49 for a brief discussion of fjords). The “Sawyer Glacier” enters the Tracy Arm from the north and the “South Sawyer Glacier” enters the Tracy Arm from the southeast (57°52'27"N, 133°10'33"W).
(a) 
(b) Time for ice to move to the Tracy Arm: _____________ years
What are the 118 substances that cannot be broken down or transformed chemically into other substances?
Compounds Elements Molecules Organisms
An archer shoots an arrow. Consider the action force to be the bowstring against the arrow. The reaction to this force is the
A) weight of the arrow. B) air resistance against the bow. C) friction of the ground against the archer's feet. D) grip of the archer's hand on the bow. E) arrow's push against the bowstring.