Which of the following explains why water can support life below water? 1 Water is denser when frozen, protecting underwater organisms.
2 Water cools and heats very quickly to protect aquatic ecosystems.
3 Water can dissolve most substances in their solid, liquid, and gas form.
4Water cannot move against gravity; this keeps its molecules together.

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.