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If you have had the mumps once,you cannot get them again.This is an example of natural active immunity.
Q2: Carbohydrate digestion begins in the mouth.
Q8: Which of the following is not a
Q34: What unique characteristic is shared by the
Q38: The antibodies passed from the mother to
Q50: The length of the alimentary canal is
Q94: Hemoglobin can carry oxygen.
Q98: The lungs are covered by the parietal
Q101: Lipase<br>A) is made in the pancreas<br>B) is
Q162: The respiratory tree is the structure used
Q173: While the lymphatic system is part of