Please help me with these two tasks..

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.

answerscaffolding proteins;

mathematical model hope this

lichens that colonize bare rock secrete acids that break down the rock and start the soil-production process. so they expose rocks