My Crossword<3

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Across
  1. 1. It is a physical activity including stretching
  2. 3. You are breathing oxygen,the substance you need to breathe
  3. 6. It is unusual and you are not comfortable with it
  4. 7. Ancient and a common shape
  5. 8. It is not real but belonging to a certain tribe or country
  6. 10. It is a substance that makes the rate of a chemical reaction higher without making a permanent change
Down
  1. 2. It gives plants their green colour
  2. 4. Usual and expected
  3. 5. It makes you feel bad emotions including pity and sadness
  4. 9. It is a fictional name normally wrote by a author