<span>Young children could volunteer with animal services, for example Guide Dogs for the Blind or Hero Dogs. They could volunteer at their local library or around the house to do chores, or around the neighbourhood, for example car washing.</span>
A. immune system
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The answer would be introspection. It is then the examination of one's conscious thoughts as well as feelings. It relies on observation of a person's mental state yet spiritually it refers to examining one's soul.Hope this would be of help.
From what I learned it health class it’s 60%
