Prolonged tropical weathering of specific kinds of bedrock can produce deposits of which mineral?
A) Gold
B) Hematite
C) Halite
D) Bauxite
Answer: D
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Creep is the most economically damaging and widespread type of material flow. Indicate whether the statement is true or false
The proportion of carbon dioxide in Earth’s atmosphere has been decreasing steadily for the past 200 years.
Indicate whether the statement is true or false.
In toxicology studies, LD50 is best described as ________
A) the dose at which 50% of an exposed population is killed B) the dose at which 50% of an exposed population develops disease C) the dose at which 50% of an exposed population develops a chronic effect from the toxicant D) the dose at which at least 50% of the exposed population is not affected by the toxicant
The action of acyl-CoA dehydrogenase and FAD on the fatty acid results in which of the following?
A) elimination of a C2 fragment B) formation of a cis-double bond between the a- and b-carbon atoms C) formation of a trans-double bond between the a- and b-carbon atoms D) none of the above