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Natural active immunity arises from an exposure to antigens, while natural passive immunity <span>arises from the passage of antibodies across the placenta or breast milk. </span>A mother breastfeeding her baby is an example of passive natural immunity.
Passive natural immunity is type of immunity in which antibodies are passed from the mother to fetus or child. In case of breastfeeding antibodies are passes through the breast milk.
A famine may occur when there is a food shortage due to a bad crop of a certain food. Or if there is more people needing a certain food than what is available. <span />
Answer:
Rest each muscle group for at least 48 hours to maximise gains in strength and size.