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:
- a strong, sweet smell
- a dry, rough texture
- a green color
- a smooth stem
answer: Which observation of a plant supports the inference that photosynthesis can take place?

question: Write a question you would see in a school textbook. OPTIONS:
- vacuole
- nucleoid
- mitochondrion
- cytoplasm
answer:
Cells come in two basic types, prokaryotic and eukaryotic. Which cell structure is found in both prokaryotic and eukaryotic cells?