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Biology Life Processes CBSE Board 2026 Easy

In human beings the oxygen rich blood is pumped out to the body by:

In human beings the oxygen rich blood is pumped out to the body by :
  1. (a)contraction of right atrium
  2. (b)relaxation of left ventricle
  3. (c)contraction of right ventricle
  4. (d)contraction of left ventricle

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