Science crossword puzzle

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Across
  1. 1. a branch of science related to the development of the embryo
  2. 4. An extended break in a body of rock
  3. 6. A slowly moving mass or river of ice
  4. 9. cycle the continuous movement of water within earth and its atmosphere
  5. 10. A change in heritable characteristics over time
  6. 11. the substance that transfers the energy or light from one place to another
  7. 13. The highest point of a wave
  8. 15. A hot molten semi-fluid that erupts from volcanoes
  9. 18. A clastic sedimentary rock composed of silt
  10. 19. an impression of a prehistoric organisms cast in a rock
Down
  1. 2. The waves can Bend
  2. 3. A combustible rock
  3. 5. The process in which earthen materials are worn away
  4. 7. A soft, finely stratified sedimentary rock
  5. 8. The lowest point of a wave
  6. 10. the process of a species ceasing to exist
  7. 12. A self replicating material in nearly all living things
  8. 14. a disturbance that Carries energy from place to place
  9. 16. The branch of science concerned with the bodily structure of organisms
  10. 17. A hard sedimentary rock consisting of sand or quartz