LIFE PROCESS

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Across
  1. 3. major excretory organ in human
  2. 5. ameoba shows which kind of nutrition
  3. 6. instrument used for measuring blood pressure
  4. 7. protects the inner lining of stomach from hcl
Down
  1. 1. red pigment carrying oxygen in blood
  2. 2. The filtration units of kidneys are called
  3. 4. Name the largest artery of body