Which of the following is a not a primary amine?
A) Benzedrine
B) Fastin
C) Methedrine
D) None, they are all primary amines.
C
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It is well-documented that while some synthetc pesticides have caused great harm to living creatures, others have saved lives. Give a brief account of one that has, ironically, saved human lives: DDT
What will be an ideal response?
The cyanobacteria were
A) chemoautotrophs. B) responsible for introducing substantial amounts of oxygen into Earth's atmosphere. C) the earliest known prokaryotes. D) a group of heterotrophic bacteria.
A groundwater divide is most likely to occur:
a. beneath a major stream b. beneath a lake c. about halfway between the crest of a hill and the base d. near the crest of a hill
A/an__________ is a chain of metropolitan areas with a combined population of over 10 million
Fill in the blank(s) with correct word