As water freezes it expands almost ________ percent and is able to mechanically weather rock
A) 1
B) 10
C) 50
D) 75
E) 100
Answer: B
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Which statement is false?
A. CFCs are persistent chemicals. B. Ozone depletion is worst in Antarctica. C. CFCs substitutes have been found. D. Ozone thinning levels remain steady over seasons. E. CFCs contribute to global warming.
On average, periphery states have a lower ratio of doctors to inhabitants than do core states
Indicate whether this statement is true or false.
Which of the following gives the height of the base of a cumulus cloud when the surface air temperature is 45°C and the dew point is 25°C?
A. 1125 m B. 2000 m C. 2500 m D. 4000 m
Which term is used to describe the conversion of natural resources into goods and services in addition to the ongoing trade of such goods and services?
a. Economy b. nongovernment organization c. Ecosystem d. Calculator