Random Science Words Crossword Puzzle

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Across
  1. 1. A plastid that contains chlorophyll and in which photosynthesis takes place.
  2. 3. The basic unit of a chemical element.
  3. 6. A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
  4. 7. The remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
  5. 8. The science that deals with the earth's physical structure and substance, its history, and the processes that act on it.
  6. 11. A branch of natural science that deals principally with the properties of substances, the changes they undergo, and the natural laws that describe these changes.
  7. 12. The science of life and living organisms
  8. 13. The study of genes and heredity
Down
  1. 2. The branch of science that deals with celestial objects, space, and the physical universe as a whole.
  2. 4. Green pigment, present in all green plants which absorbs light
  3. 5. Has three main parts: the cell membrane, the nucleus, and the cytoplasm.
  4. 9. The natural agent that stimulates sight and makes things visible.
  5. 10. Process by which a green plant makes its own food