Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle.
Neptune's atmosphere, like Jupiter's and Saturn's, is composed primarily of hydrogen and helium, along with traces of hydrocarbons and possibly nitrogen; it contains a higher proportion of ices such as water, ammonia, and methane.
Neptune, like the other gas giant planets, is made of very cold gases of hydrogen, helium, and methane. It has wispy white clouds, which we think are made of methane crystals. (On Earth, the wispy white cirrus clouds are made of ice crystals.) It is almost as cold as Pluto: 330Â° Fahrenheit.eptune, like the other gas giant planets, is made of very cold gases of hydrogen, helium, and methane. It has wispy white clouds, which we think are made of methane crystals. (On Earth, the wispy white cirrus clouds are made of ice crystals.) It is almost as cold as Pluto: 330Â° Fahrenheit.