Nature

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Across
  1. 3. The process by which green plants and some other organisms use sunlight to synthesize foods.
  2. 7. The upper layer of branches and leaves in a forest.
  3. 9. A vast system of stars, gas, and dust bound together by gravity.
  4. 10. The variety of plant and animal life in a particular habitat.
Down
  1. 1. The seasonal movement of animals from one region to another.
  2. 2. A community of living organisms and their interactions with the environment.
  3. 4. Pertaining to the rise and fall of the sea, usually caused by the gravitational pull of the moon.
  4. 5. An animal that hunts and kills other animals for food.
  5. 6. A mountain or hill that erupts with lava, ash, and gases.
  6. 8. A deep, narrow valley with steep sides.