Science Vocabulary Terms

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Across
  1. 2. The basic unit of a chemical element, consisting of a nucleus surrounded by electrons.
  2. 5. The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
  3. 9. A specialized cell transmitting nerve impulses; a nerve cell.
  4. 10. The smallest structural and functional unit of an organism, typically microscopic.
  5. 11. The force that attracts a body toward the center of the Earth, or toward any other physical body having mass.
  6. 12. The molecule that carries genetic instructions in all living things.
Down
  1. 1. The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the Earth.
  2. 3. A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
  3. 4. Anything that has mass and takes up space.
  4. 6. A chemical reaction in which a substance combines with oxygen, often releasing energy.
  5. 7. The capacity to do work, existing in various forms such as kinetic, potential, thermal, and chemical.
  6. 8. A biological community of interacting organisms and their physical environment.