What does the formation of erratics and kettle lakes have in common?

Answer;

-Both kettel lakes and erratics are the results of materials that were deposited by a glacier as it gets retreated.

Explanation;

-Kettles are depressions left behind after partially-buried ice blocks melt. They are formed as a result of blocks of ice calving from glaciers and becoming submerged in the sediment on the out wash plain. Many are filled with water, and are then called kettle lakes.

-An erratic is a boulder transported and deposited by a glacier having a lithology different than the bedrock upon which it is sitting. Erratics are useful indicators of patterns of former ice flow.

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.