What percent of the world's power is generated from renewable sources?
A) 20% B) 10% C) 3% D) 5% E) 7%
B) 10%
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In terms of number of deaths per participant, the most dangerous activity that most people in the U.S. participate in is
A. flying in an airplane. B. swimming in the ocean. C. riding in a motor vehicle. D. visiting a relative. E. walking in a thundershower.
Water is generally a good solvent for which of the following types of compounds?
A) ionic compounds B) polar compounds C) both a and b D) neither a nor b
The concept of sustainable development includes ________
A) the importance of developing the arts B) growth in profits from international trade C) convenience and global economic improvements D) each nation being sovereign over its own resources, to be used as its citizens deem appropriate E) the needs of future generations
Which of the following occurs in the cumulus stage of an ordinary cell thunderstorm?
A. Hail is common. B. Thunder and lightning frequently occur. C. Cool air near the ground rises. D. Moist air rushes upward and forms an updraft.