theam 7 vocabulary

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Across
  1. 4. a struggle amoung plants and animals for food
  2. 6. an animal that lives in the sea
  3. 7. a hard material that forms a skeletion in many animals
  4. 8. a tiny plant/animal that lives in the ocean
Down
  1. 1. an animal
  2. 2. one of a kind
  3. 3. part of something
  4. 4. a substace found in plants that produce energy
  5. 5. to live in a place
  6. 9. to connect with things