Scientific reading

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Across
  1. 1. – A procedure to check quality, performance, or reliability.
  2. 7. – To convert waste into reusable material.
  3. 10. – A small brush used to clean teeth.
  4. 11. – A scientific test done to discover or prove something.
  5. 14. – Places where garbage and waste materials are buried.
Down
  1. 2. – Able to withstand high temperatures without being damaged.
  2. 3. – To break down food in the body so it can be used for energy.
  3. 4. – Decayed organic material used to fertilize soil.
  4. 5. – A group of interacting or interdependent parts forming a whole.
  5. 6. – Something that can be maintained over time without harming the environment.
  6. 8. – A group of atoms bonded together, the smallest unit of a chemical compound.
  7. 9. – A substance formed by or used in chemical processes or reactions.
  8. 12. – A protein that speeds up chemical reactions in living organisms.
  9. 13. – Waste material; things thrown away.
  10. 15. – The molecule that carries genetic information in living organisms.