<span>This indicates the blood calcium level is very low .This condition is known as hypocalcemia. The low calcium level may result from a problem with the parathyroid glands as well as from diet,kidney disorders,or certain drugs also causes low blood calcium level.</span>
C. 5.75 calories per gram
Edit: 287.5÷50=5.75
402.5÷70=5.75
If 1 inch equals 20miles then 8 inches equals 20 x 8 = 160 miles.