Nature and more!

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Across
  1. 3. 4x10
  2. 4. word to say a quantity or that something exists
  3. 6. stone
  4. 7. name of the first plant
  5. 9. colourful plant
  6. 10. mass of water
  7. 11. of the first unit
Down
  1. 1. beautiful flying insect
  2. 2. colourful flower
  3. 4. the number after twenty-nine
  4. 5. animal that flies
  5. 8. long natural wooden structures with leaves