The white fur of a black-and-white bunny is due to light
A. absorption.
B. refraction.
C. scattering.
D. reflection.
Answer: D
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If we could immediately halt the worldwide production of CFCs, approximately how long would it take to return the level of the ozone in the stratosphere to pre-1950s levels?
A. 100 years B. 10 years C. 60 years D. 1000 years
Which of the following expressions is the designation for a cool, moist air mass?
A. cP B. cT C. mP D. mT
Swahili is a creole language used in which of the following subregions of Sub-Saharan Africa?
A. Southern Africa. B. Namibia. C. The Niger River Valley. D. Eastern Africa.
A rock is subjected to differential stress, then it means that:
a) forces are pushing inward from all directions by the same amount b) stresses are pushing inward all directions by the same amount c) fluid pressure is greater than the confining pressure d) the amount of stress is greater in some directions than in others