What types of crust interact at convergent plate boundaries?

Orogenic belts occur where two continental plates collide and push upwards to form large mountain ranges. These are also known as collision boundaries .. hope this helps ?

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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.