Don't worry, I am too confused!

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Across
  1. 2. a group of organic compounds that are oily to the touch
  2. 4. nutrition found in food
  3. 7. a molecule that has an abundance of atoms
  4. 8. a simple sugar
  5. 9. a compound made up of several repeating units
  6. 10. a biological molecule consising of carbon, hydrogen and oxygen atoms
  7. 12. a type of sugar in fruit
  8. 14. a building block of protein
  9. 15. a molecule that may react chemically to another molecule of the same type to former one greater in size
Down
  1. 1. a carbohydrate made up of sugar molecules
  2. 3. DNA
  3. 5. the chains of nucleotides in a nucleic acid
  4. 6. a type of sugar in your body
  5. 11. a sugar composed of two monosaccharides
  6. 13. Deoxyribonucleic Acid