Which of the following explains the unusually high melting points of amino acids?
A) their formula weights
B) the polarity of the side chains
C) the presence of nitrogen atoms
D) their existence as zwitterions
D
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The media tends to sensationalize long-term problems like atmospheric changes rather than short-term issues
Indicate whether the statement is true or false
By 2010, the __________ made up more than three quarters of the United States' economy, as measured by its share of the Gross Domestic Product (GDP).
-quaternary sector -no single economic sector holds such away in the US economy -primary sector -tertiary sector -secondary sector
Oil spill cleanup techniques are able to recover and remove the majority of spilled oil from the marine environment.
Answer the following statement true (T) or false (F)
The core of the city, the central business district (CBD), concentrates office buildings and retail shops
Indicate whether the statement is true or false.