Which of the following mutations is most likely to result in a heritable change? A. a chemical in cigarette smoke causes a mutation in a lung cell

B. radiation from x-rays causes a mutation in a brain cell

C. ultraviolet light from the sun causes a mutation in a skin cell

D. a substitution in DNA coding causes a mutation in a sperm cell

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.

. ph changes the ability of them he enzyme to dissolve in water.

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )