Over the last century and a half, the main source of increased atmospheric carbon dioxide has been ________
A) volcanoes
B) photosynthesis
C) photoperiodism
D) rock decomposition
E) burning of fossil fuels
Answer: E
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Abundant water promotes chemical weathering because most of the relevant reactions involve water.
Answer the following statement true (T) or false (F)
Visualize five horizontal sedimentary strata exposed in a cliff or canyon wall identified by consecutive numbers, 1 being the lowest bed and 5 being the highest. Which of the following statements concerning the strata is true?
A) Bed 4 is older than bed 2. B) Bed 3 is older than beds 2 and 4. C) Bed 5 is the oldest. D) Beds l and 3 are older than bed 4.
In the open ocean, 1 wave in ________ will be three times as high as the height of the wave average
A) 23 B) 75 C) 1175 D) 50,000 E) 300,000
A scientist in central Nebraska is studying factors that affect the formation of tornadoes. How might the scientist benefit from using a computer simulation for his studies?
A. He could model tornadoes by controlling input parameters and analyzing the related outputs. B. He could alter the path of a tornado to minimize damage to nearby communities. C. He could use it to warn people of impending storms and have it instruct them where to take shelter. D. He could design bridges and buildings in Nebraska's infrastructure to withstand the forces of tornadoes. A. He could model tornadoes by controlling input