Which of the following gases accounts for about 78 percent of the atmosphere's mass?
a. water vapor
b. nitrogen
c. ozone
d. carbon dioxide
b
Environmental & Atmospheric Sciences
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Continental rifting has not occurred on Earth since the Triassic. Indicate whether the statement is true or false
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What are the spatial resolutions of DEMs available from the USGS?
What will be an ideal response?
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A person who is gaining weight but lacking in some vitamins exhibits
A) malnutrition. B) undernourishment. C) malnutrition and undernourishment. D) malnutrition and overnourishment.
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Which of the following would be categorized as a cultural ecosystem service of forests?
A. Recreation and scenic areas for tourism B. Timber and landscape materials C. Mushroom and plant harvests D. Soil stabilization and air purification
Environmental & Atmospheric Sciences