Chain Crosswords Long Nature Easy — Set 6

Easy 11×11 Set 6
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5
Across
  1. 3. Hard tissue in the skeleton
  2. 4. Amount of matter in an object
  3. 5. Mixture of minerals plants grow in
Down
  1. 1. A word related to science
  2. 2. Curved glass that bends light
  3. 4. Natural satellite of Earth