SCIENCE AND NATURE

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Across
  1. 2. Segments of DNA
  2. 3. The central organ of the human nervous system
  3. 4. Body fluid in humans and other animals that delivers necessary substances
  4. 5. The process through which a substance changes from a liquid to a solid
  5. 6. Doctor for animals
  6. 8. Human reaction to substances in the environment that are harmless to most people
  7. 9. It includes living things, planets, stars, galaxies, dust clouds, light, and even time.
Down
  1. 1. Branch of science that deals with the form and properties of matter and substances or the interaction between individuals
  2. 3. The science that studies life, and living things, and the evolution of life
  3. 7. Group of linked ideas intended to explain something