The interstellar clouds called molecular clouds are ________.
A) the cool clouds in which stars form
B) the clouds in which elements such as carbon, nitrogen, and oxygen are made
C) clouds that are made mostly of complex molecules such as carbon dioxide and sulfur dioxide
D) the hot clouds of gas expelled by dying stars

Question

Quizplus · Accepted Answer

Molecular clouds are cool clouds made mainly of molecular hydrogen (H2) and are the primary locations of star formation. These clouds are typically very large and dense, with temperatures of a few degrees above absolute zero.

The Interstellar Clouds Called Molecular Clouds Are ________