Be global, Be a scientist

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Across
  1. 3. Make their own food
  2. 7. Soil, water, air, climate, are the ______ parts of an ecosystem
  3. 9. Light cannot pass an object
  4. 10. _________ were used also as landmarks
  5. 12. Is made of living and non living things
  6. 13. Pieces of curved glass
Down
  1. 1. _____ uses satellites to navigate
  2. 2. Plants and animals are _____ parts of an ecosystem
  3. 4. A clear object is...
  4. 5. The place where a plant or animal live
  5. 6. Thay eat plants
  6. 8. They eat herbivores
  7. 11. Light bounces on a smooth object