Which of the following is not a characteristic of eukaryotic cell

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

substitution is the answer in this case

that is true   : ) hope this you

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.