Answer:
the lens loses its ability to change shape readily
1) precontemplation, (2) contemplation, (3) preparation, (4) action, and (5) maintenance
Recent longitudinal data on bone mineral deposition suggests that the calcium required should be 2.5mg for girls and 3.5 mg for boys during adolescents.
A sufficient and continuous supply of nutrients, including calcium, protein, magnesium, phosphorus, vitamin D, potassium, and fluoride, is necessary for the creation of bones.
The mineral calcium is most prevalent in the human body. The body has 99% of its calcium in bones and teeth, and the remaining 1% is found in blood and soft tissues.
The human body has more calcium than any other mineral, accounting for 1.5 to 2% of the total weight. An adult human's body has about 1,200 g of calcium, and bones account for more than 99% of that total. Bone mineral, which is found in bones and teeth, is the only exception in a healthy human. In fact, bone mineral is a crystalline, inorganic, solid containing.
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