Could someone plz help me? :(

The fact that the total amount of energy in a system remains constant is a(n)

Salt in oceans comes from and of rocks

The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point