Origins of the elements

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Across
  1. 1. Number of protons in the nucleus
  2. 3. Explosion that created the universe and its particles
  3. 5. This disease can be developed when there's not enough iron in the blood
  4. 6. Represented by H in the periodic table
Down
  1. 2. Represented by C in the periodic table
  2. 3. Chemical elements found in living organisms
  3. 4. Organizes elements based on their atomic number and chemical properties
  4. 5. Basic particles of chemical elements