Answer:
The bones
Explanation:
this is because they arent made up of soft tissue, like the rest of ur body
So look up the symptoms of autism that could cause difficulties with teaching him how to swim and how to work around it (patience is key) if you need the symptoms just ask I'll get the real quick
look up difficulties that come with Alzheimer's and a way to help the 81 year old like maybe catching a tossed ball and walking with a dog around the nursing home (patience and encouragement)
look up brain injuries and exercise that might help with him it's important to encourage him to keep going
look up alcoholism maybe keep her mind and body occupied like word puzzles and exercises again patients is key
Grains are basically carbohydrates
Spermatogonia and erythroblasts