Why is the pancreas considered part of the endocrine system

How will technology impact medicine in the future?

Explain the significance of the increased cell specialization of the volvocine line

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?