  Since 990 is divisible by ten, the answer is 990. If you were rounding off 994 the answer would also be 990. If you were rounding off 995, the answer would be 1,000.
Jupiter is the largest and most massive planet in the solar system. It was named after the chief Roman god. It is a gas giant composed of liquid and gaseous matter, and has many moons. Some of the storms in its atmosphere have lasted hundreds of years.
Making the world better, one answer at a time. The type of atmosphere found in Jupiter is mostly made up of hydrogen. Jupiter does not any solid surface and this is why it is known as a gaseous planet.upiters Atmosphere is not as good as the other planets Hydrogen and helium The atmosphere of Jupiter is made up of hydrogen, helium, ammonia, methane, and water vapor. The atmosphere appears as alternating bands of light regions, called zones, and the dark regions called belts, that run parrellel to the equator.