Vaccines and shots are typically made of a small controlled portion of the virus or disease to cause immunity to the large scale types.
It so should be A.
Mark branliest if it is correct!
Answer:
Fragments of rock are squeezed and cemented together.
Explanation:
There are two approaches used when inserting a pacemaker; the epicardial approach and the transvenous approach. Epicardial approach involves the opening the chest cavity and placing a lead on epicardial sac of heart while the transvenous approach involves accessing a vein and inserting an electrode into the vein. Epicardial approach for inserting pacemakers are divided based on approach to heart thoracotomy, upper abdominal or endoscopic.
B. toilet
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