Final answer:
Vitamins, minerals, and hormones are necessary for normal growth and repair of organs and tissues.
Step-by-step explanation:
Normal growth and repair of existing structures require vitamins, minerals, and hormones. In the context of bone growth, vitamins D, C, and A are necessary, along with minerals such as calcium, phosphorous, and magnesium. Hormones like parathyroid hormone, growth hormone, and calcitonin are also required for proper bone growth and maintenance. These nutrients and hormones support the processes of bone deposition and resorption, which contribute to normal growth and repair of organs and tissues.
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