Which of the following acids is used in the synthesis of the polymer nylon-66?
A) adipic acid
B) palmitic acid
C) stearic acid
D) none of these
A
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When did the harvesting of commercial whale species cease?
a. When the International Whaling Commission formed b. When there were substitutes for the products produced from whales c. When the hunting of whales became uneconomical d. CITES- Convention on the International Trade of Endangered Species
Geologists are correlating past geologic events to see if there are correlations with climate changes
Indicate whether the statement is true or false
Select from the list below the coarse-grained rock which is composed mainly of quartz and potassium feldspar
A) diorite B) andesite C) basalt D) granite
In most places, which of the following is usually not an important in the weathering process?
A) Microscopic open spaces B) Exfoliation C) Joints D) Faults E) Solution cavities