_______ when two or more elements combine [example: CO2 (carbon dioxide)]

______  a material that cannot be broken down into anything simpler [example: O (oxygen)]

________ energy from the sun that reaches Earth as visible light, ultraviolet and infrared (heat) radiation

______ any living thing

______ a substance that produces power or energy

______ change from one form to another

______ the compound produced through photosynthesis which plants use as food

______ a gas produced by cells during respiration; used in photosynthesis to produce sugars

______ a waste product produced by plants during photosynthesis that animals use for respiration

______ the process where plants use sunlight, water, and carbon dioxide to produce sugar and release oxygen