Why is the inner core made from solid metal, while the outer core is made of molten metal? A. The temperature of the inner core is higher than the outer core
B. The temperature of the inner core is lower than the outer core
C. The pressure of the inner core is higher than the outer core
D. The pressure of the inner core is lower than the outer core

C

Explanation:

the pressure on the inner core is greater than the pressure on the outer core and the melting point of iron, the main constituent of the core, increases as soon as the pressure goes up

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;