5. High clouds are composed primarily of ice crystals, whereas low clouds are composed primarily of water
droplets. This difference is most likely because the
average air temperature at altitudes from:
A. 0 km to 3.2 km is at or below Or whereas the
average air temperature at altitudes Trom 3.2 km to
6.0 km is above 0°C.
B. O km to 3.2 km is at or below 0°C, whereas the
average air temperature at altitudes from 6.0 km to
16.0 km is above 0°C.
C. O km to 3.2 km is above 0°C, whereas the average
air temperature at altitudes from 3.2 km to 6.0 km
is at or below 0°C.
D. O km to 3.2 km is above 0°C, whereas the average
air temperature at altitudes from 6.0 km to 16.0 km
is at or below 0°C.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.