science

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Across
  1. 2. The opposite of solid (6 letters)
  2. 3. A metal that is liquid at room temperature (7 letters)
  3. 5. The process plants use to make food (14 letters)
  4. 8. A liquid state of water falling from clouds (4 letters)
  5. 9. The outer layer of Earth (5 letters)
  6. 11. The solid outer part of a plant stem (4 letters)
Down
  1. 1. A scientist who studies animals (9 letters)
  2. 3. The planet known as the "Red Planet" (4 letters)
  3. 4. The organ that pumps blood in our body (5 letters)
  4. 6. A gas that plants give us to breathe (6 letters)
  5. 7. The closest star to Earth (3 letters)
  6. 9. The smallest unit of life (4 letters)
  7. 10. A hot, glowing ball of gases in space (4 letters)