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.
Atmospheric composition. Neptune's atmosphere is made up predominately of hydrogen and helium, with some methane. The methane is part of what gives Neptune its brilliant blue tint, as it absorbs red light and reflects bluer colors. Uranus also has methane in its atmosphere, but has a duller shading.Something else must be contributing to Neptune's hue, but scientists aren't certain what. The planet has ten to a hundred times more methane, ethane, and ethyne at its equator than it does at its poles.he clouds of Neptune vary with the altitude. Cold temperatures allow methane clouds to condense in the highest layers of the atmosphere. Scientists think that clouds made up of ammonia and hydrogen sulfide exist at higher pressures.