What makes venus the hottest planet among the planets in the solar system it is the test because of the A. frozen ice and dust in its atmosphere
B. presence of hydrogen and helium in the atmosphere
C. dense clouds of carbon dioxide that causes the greenhouse effect
D. comets meteor asteroids and other heavenly bodies in the solar system​

Read the following passage. the early mill girls were of different ages. some were not over ten years old; a few were in middle life, but the majority were between the ages of sixteen and twenty-five. the very young girls were called "doffers." they "doffed," or took off, the full bobbins from the spinning frames, and replaced them with empty ones. based on the passage, early mill girls were mostly young. were mostly middle aged. were of a variety of ages. were mostly children.