Biology

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Across
  1. 2. it is covered by a hard, white layer called the enamel
  2. 4. canines are very sharp and long
  3. 6. food changes into ball like mass
  4. 7. which animals have heterodant teeth
  5. 8. in the mother, food is first chewed and broken into small pieces this is called.
Down
  1. 1. food pipe
  2. 3. nutrition in humans is (they ingest solid food)
  3. 5. it is the process of elimination of undigested matter in the form of faeces