The typical density and temperature of molecular clouds are
A) 100 molecules per cubic centimeter, 10-30 Kelvin.
B) 300 molecules per cubic centimeter, 10-30 Kelvin.
C) 1000 molecules per cubic centimeter, 10-30 Kelvin.
D) 100 molecules per cubic centimeter, 100-300 Kelvin.
E) 300 molecules per cubic centimeter, 100-300 Kelvin.
B
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