Which of the following fronts do not separate tropical from polar air masses?
A) cold
B) warm
C) stationary
D) occluded
Answer: D
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The Chernobyl nuclear accident about 30 years ago
A) resulted in only five deaths and the loss of less than two square miles of land. B) spread large amounts of deadly radiation over thousands of square miles. C) avoided a complete core meltdown because of heroic intervention by two men who later died from radiation exposure. D) was cleaned up and the nuclear reactor rebuilt in 1994 and has been free of problems since then.
Originating in India, Buddhism actually travelled through Central Asia on its way to China and Japan
Indicate whether the statement is true or false
Which of the following is the mechanism of peptide bond formation during protein synthesis?
A) Nucleophilic attack on the carbon of a carbonyl group by an amino group. B) Nucleophilic attack on the nitrogen of an amino group by the carbon of a carbonyl group. C) Nucleophilic attack on the nitrogen of an amino group by the oxygen of a carbonyl group. D) Nucleophilic attack on the oxygen of a carbonyl group by an amino group.
At the end of the last ice age, melting ice caused sea level rise, which flooded river valleys along the Atlantic coast of North America, these flooded river valleys are called what?
A) Splits B) Estuaries C) Basins D) Lagoons