Answer:
d
Explanation:
the high pressure causes the inner core to be solid but the outer core doesn't have much pressure applied to it
carbon dioxide is the answer
1) Cholesterol is important for the production of hormones, for example, some hormones are synthesized (made) from cholesterol - for example stereoid hormones.
2) Vitamin D is also made from cholesterol- it's an important vitamin used to support the absorption of calcium
When the concentration of a certain solute is low inside the cell with respect to the cell's external environment, then the cell performs active transport of the solute from the cytoplasm with a low concentration of solute within the cell to the cell's external with a high concentration of the solute. This process of active transport requires the need of energy in the form of ATP to drive the pumps that are present on its cell membrane.
