When an amine reacts with an anhydride to produce an amide, what else is formed?
A) an alcohol
B) a carboxylic acid
C) water
D) No other compound, the amide is the only product.
B
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In the United States, A Marine Protected Area where fishing and other activities are completely prohibited is referred to as a ________.
A. no-take zone B. conservation area C. national park D. marine protected zone E. marine reserve
Which term refers to people who are dislodged and impoverished by strife in their home country but are unable to emigrate?
a. immovable persons b. legal aliens c. internally displaced persons d. asylum seekers e. refugees
The rising of cold water from deeper layers to replace warmer surface water is called ________
Fill in the blank(s) with correct word
What best explains why stream valleys become wider over time?
A. tectonic uplift causes valleys to widen naturally. B. streams get further above base level. C. meandering streams undercut their banks and cause mass wasting. D. stream velocity becomes greater over time. E. deposition of sediment creates a valley floor.