Metals are useful for the structural support of buildings because they
A. are shiny.
B. conduct electricity.
C. do not conduct heat well.
D. are strong but can be bent.
E. both c and d
Answer: D
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____ is defined as a cloud with its base at or very near the ground.
Fill in the blank(s) with the appropriate word(s).
Which of the following best describes the energy supply in the United States in 2015?
A) Coal is still the dominant fuel. B) Coal has largely been replaced by natural gas for energy supplies. C) Natural gas remains the dominant fuel in the United States. D) Coal and oil are the primary energy supply in the United States.
Although many factory laborers in MDCs are paid $________ per hour, factory laborers in LDCs may be paid less than $________ per hour
A) 35; 2 B) 75; 15 C) 35; 10 D) 100; 20 E) 45; 2
The reason winds exist is ________
A) the unequal heating of the Earth system B) the Coriolis effect C) because air is a mixture of gases D) friction E) altitude differences