Which of the following is true regarding cloud condensation nuclei?
A) Maritime air masses average about a billion nuclei per cubic meter.
B) Continental air masses contain more condensation nuclei than maritime air masses.
C) Maritime air masses generally possess more nuclei than continental air masses.
D) Condensation nuclei are rare in urban environments.
E) The difference between maritime and continental locations. is not discernible.
B
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It is believed that human activities can alter the atmosphere in such a way that they can change climate.
Answer the following statement true (T) or false (F)
Amino acids, sugars, proteins, and nucleotides are considered the building blocks of life.
a. true b. false
Overharvesting is a serious threat to ________
A) fisheries B) deer C) insect pollinators D) songbirds E) wheat
Which of the following is not a method of obtaining samples and observations of the oceanic ridge system?
A) Finding segments of ocean floor that have been thrust up onto the continent B) Visual inspections using submersible equipment C) Deep sea core samples D) Side-scan sonar