Where is most oxygen located?
A. Mesosphere
B. Thermosphere
C. Stratosphere
D. Troposphere
Answer: D
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The Millennium Development Goals ended in 2015 with mixed results, but the post-2015 Sustainable Development Goals will
A) track only population growth. B) evaluate more than twice as many progress indicators. C) seek national legislation for sustainable resource use. D) monitor the increasing frequency of extreme poverty in developed nations.
Which of the following types of radiation might be best for medical imaging?
A. Gamma radiation would be best because it penetrates the best. B. Only X-rays are used for medical imaging. C. Alpha radiation would be best because it penetrates the least and therefore does the least damage. D. Beta radiation would be best because it can be measured electrically. E. none of the above
The total mass of water vapor stored in the atmosphere represents about one ____ supply of the world's precipitation
A) day's B) week's C) month's D) year's
____________________ is the amount of heat required to raise the temperature of 1.0 gram of water 1.0 degree Celsius
Fill in the blank(s) with correct word