The history of conservation and environmentalism is
A. Traceable well back into human history
B. Based in the Industrial Revolution
C. Based in the 1970s environmental movement
D. Largely unrecorded
E. A relatively new movement
Answer: A
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When a 100-kg block is simultaneously pushed toward the east with 200 N and toward the west with 150 N, the combination of these forces on the block is
A. 350 N west. B. 50 N west. C. 350 N east D. 50 N east.
Ozone is a component of photochemical smog.
Answer the following statement true (T) or false (F)
Using 1000 J of work, a toy elevator is raised from the ground floor to the second floor in 20 s. How much power does the elevator use?
A) 20 W B) 50 W C) 100 W D) 1000 W E) 20,000 W
The daily temperature range is greatest in a:
a. rainforest. b. savanna. c. monsoon. d. desert.