After looking at the photograph given above, one sedimentary rock that probably metamorphosed to form rock on unit 6 is called limestone. You can also use the sedimentary rock called dolostone. Both will be acceptable answers to this question.
1. Day and night cycle - the rotation of the Earth results in the day and night cycle as different parts of it are exposed to the sunlight at different times.
2. In the Northern Hemisphere the winds tend to curve toward the right, which is caused by the earth's rotation.
Nuclear fusion generates the energy that is released by stars.
In the great majority of stars, it's the fusion of hydrogen nuclei
to form helium nuclei plus energy. In very old stars, the nuclei
of heavier elements are fused, forming even heavier ones.
