question: Write a question you would see in a school textbook. OPTIONS:
- oil and coal
- wind and wood
- nuclear and geothermal
- hydropower and natural gas
answer: Photovoltaic cells capture photons of sunlight and transform them directly into electricity. Many of Earth's other energy resources are simply transformed solar energy. Which two energy resources store energy that did not begin as solar energy?

question: Write a question you would see in a school textbook. OPTIONS:
- reflected sunlight
- absorbed light from Earth's atmosphere
- gases in the Moon's interior
- volcanic eruptions on the Moon's surface
answer: The Moon is visible to observers on Earth because of

question: Write a question you would see in a school textbook. OPTIONS:
- crystals.
- igneous.
- sedimentary.
- metamorphic.
answer:
Rocks that contain fragments of bones, shells, and plant remains are most likely