12. What is the difference between a globular star cluster and an open star cluster? I
13. List the three types of galaxies:

Many animals cannot sweat to maintain a stable body temperature. what is one other way animals can cool down?

Which part of cellular respiration must occur before any of the other steps can occur

What causes eclipses? check all that apply. earth's rotation on its axis moon's shadow covering the sun earth's shadow covering the moon earth's orbit and moon's orbit occasionally aligning the moon and sun's gravity pulling in the same direction