Oxygen is produced by green plants, including the algae in the ocean, but also trees, grass, etc. That is what we need, if we want to continue to have a supply of oxygen in the air, for us to breathe.
You don't.
Neptune is composed of helium, hydrogen and methane with a molten ammonia core. There is no oxygen on Neptune at all. A human would choke to death.
No other planets in our solar system have been found to have oxygen in any significant amounts.
Invent plants. (Or blue-green algae.).
Compounds are made out of atoms of different elements. The properties are different than the properties of the constituent elements.For example, Water is made out of Hydrogen and Oxygen. Both Oxygen and Hydrogen are gasses at room temperature. Water is a liquid at room temperature with very different properties.
The most metallic element on the planet is Francium. It is the last element to be discovered that was not made synthetically.
scientists knew that oxygen was a element as it had the atoms of only O i,e. oxygen and helped in increase in combustion
Carbon, hydrogen and oxygencarbon, hydrogen, and oxygen. it is called glucose, fructose, saccharose, lactose, ....
Physical because it is still Oxygen. A chemical change results in a chemical equation and thus a new substance. No new substance = no chemical change. Liquefaction is a physical property.
It is made out of nitrogen and oxygen
That planet is Earth.
Oxygen is naturally made. It is the by-product of photosynthesis which every plant on the planet undergoes.
Then it would be a huge planet made of gases and probably have no oxygen WE WOULD DIE
Theoretically none. The Earth has an atmosphere comprised of mainly nitrogeon 78% and oxygen 21% and as far as we know it is the only planet.
No. The element mercury contains only mercury atoms. The planet Mercury is made mostly of silicon, oxygen, and iron.
NASA has already discovered a new planet made out of water.
Earth's atmosphere is made up of 78% nitrogen and 21% oxygen. The other 1% is other gases.
75% of all living matter is hydrogen and oxygen... :)
Nobody one knows since our primates could have evolved differently on that planet.Or if the planet has oxygen and also if the planet has gravity
weird gasses and stuff
The scientific name for the gasses that surround a planet is atmosphere. The atmosphere of earth is made of nitrogen, oxygen, and carbon dioxide.