4 pounds would be the answer!
Hope this helped
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Bones are made up of a framework of a protein called collagen , with a mineral called calcium phosphate that makes the framework hard and strong. Bones store calcium and release some into the bloodstream when it's needed by other parts of the body.
Answer is true
Answer: A and D
Explanation: In old age, dehydration and compression of the disc between the vertebrae in the spine causes reduction in height. The loss of bone density (osteoporosis) can also make the spine to become more curved, and make the vertebrae to collapse due to thinning that is caused by overall decrease in body water. This can be the reason for the reduction in height of the patient.
Well Mitochondria are the structures within cells that produce energy. An example of mitochondria is what regulates metabolism in human cells.
Answer:
The first one, the third one, and the last one.
Explanation:
