Which process has been largely responsible for increasing the amount of CO2 in the last 200 years?
A) Increasing cattle ranching worldwide
B) Disintegration of petroleum-based plastics
C) Use of industrial fertilizers
D) Burning of fossil fuels
Answer: D
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Which of the following is involved in ensuring that the small ribosomal unit is properly aligned on the mRNA
A) the anticodon B) the codon C) the Shine-Dalgarno sequence D) the Svedberg sequence
An increase in the amount of carbon dioxide in the atmosphere of a planet will cause the temperature of the planet to get colder.
Answer the following statement true (T) or false (F)
Each of the three population pyramids (above) are census tracts from St. Louis County in northern Minnesota, that stretches from Duluth to Canada. The population pyramid on the left most likely represents
A) a rural population with high out-migration after high school. B) an urban population with a high number of immigrant workers. C) the part of the county with the University of Minnesota-Duluth in it. D) a retirement community on the border with Canada. E) The median census tract, where all the women are strong, the men are good-looking, and the children are above average.
Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is: C2H4(g) + H2O(g) ? C2H5OH(l) If water is present in excess, how many grams of ethanol can be produced from 42.7 g of ethylene?
A) 42.7 g B) 46.1 g C) 70.1 g D) 92.2 g