The document contains 20 multiple choice questions about energy and thermodynamics concepts such as: - Photosynthesis absorbs approximately 30% of solar radiation that strikes Earth. - Organisms transform energy but do not create it. - Potential energy describes stored energy. - The first law of thermodynamics states that energy cannot be created or destroyed. - The second law of thermodynamics states that one form of energy cannot be completely converted to a more usable form.