Alyssa and Kayla 9L

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Across
  1. 3. Second part of the food chain
  2. 4. The lowest part of the food chain
  3. 5. Component of an antioxidant enzyme that helps prevent decay of cell function
  4. 7. scale The strengths of concentration of an acid or base determines the extent to which it reacts with water
  5. 8. Used to kill lice that carried typhus killing allied troops in WWII
  6. 9. converters Contains a ceramic or wire honeycomb like structure coated with a thin layer of metallic catalysts
  7. 11. The concentration of pesticides in higher levels of food chains
Down
  1. 1. of hydrogen What does pH mean?
  2. 2. and bases What are the chemicals that produce acidic and basic substances, have many uses in our lives
  3. 3. Role in nutrition, energy source for metabolism
  4. 6. Mg
  5. 9. A system that uses sorbent of small beads of aluminum oxide impregnated with copper
  6. 10. The process of adding calcium carbonate to the environment
  7. 12. Crucial part of red blood cells that regulates oxygen transport
  8. 13. Key component of three enzymes that regulate metabolism
  9. 14. plants Can form many of the organic compounds while animals modify