Earth is covered mostly in water, but is not made up mostly of water. Most of earth is made of rock.
Earth is mostly made up of iron, oxygen, silicon, magnesium, sulfur, nickel, and other elements. The crust is largely composed of silicon and oxygen in the form of silicate minerals, while the core is primarily made of iron and nickel.
No planet is composed of mainly frozen water; Mars has probably the most frozen water of all the planets after the Earth. However, older textbooks and teacher's notes may well refer to Pluto, which is now classed as only a "dwarf planet" and is composed of roughly 50-70 percent rock and 30-50 percent ice. So, although Pluto has a lot of ice, it has more rock than ice (frozen water).
The outer planet that is not a gas giant is Neptune. Neptune is classified as an ice giant because its composition is primarily made up of water, ammonia, and methane, rather than mostly hydrogen and helium like the gas giants Jupiter and Saturn.
Planet Earth - about 80%.
Jupiter's terrain is primarily composed of hydrogen and helium gas, with no solid ground like on Earth. The outer layer of the planet is mostly made up of swirling clouds of ammonia and water vapor. Beneath these clouds, it is believed that there may be a layer of metallic hydrogen before reaching the core.
The surface of planet Earth is made up of 71% water.
Earth.
theprotoplasm of a cell is mostly made up of water.
Jupiter
Saturn is made up of hydrogen
It is mostly rock.
Gas, mostly Hydrogen and Helium.
Earth is mas mostly of silicate minerals with a core made mostly of iron and nickel.
Earth is the planet that fits this description. It contains approximately 70% water on its surface and its atmosphere is primarily composed of nitrogen, with oxygen being the second most abundant gas.
The surface of earth is covered mostly by water.
Pluto has a lot of frozen water, but it probably has more rock than ice. Anyway it's only a dwarf planet now. There are no other possible correct answers.
Check your grammar. A planet isn't alive it's mostly made up of inorganic matter.