Interstellar gas is made of mainly hydrogen. This is because that is the building for everything and hydrogen is the most common element in the universe.
90% hydrogen, 9% helium by weight
The majority of the gas is hydrogen.
plasma
Atoms.
atoms
There are two tissues that makes up the brain and the spinal cord. These are called the grey matter and the white matter. Grey matter is what covers about a half an inch of the brain. White matter is what makes up everything else of the brain.
CO2 makes up most of the exhaled air in vertebrates.
What is the type of macromolecule that makes up most of the membrane structure?
Interstellar matter is most accurately characterized as plasma, the "fourth state" of matter, of which the vast majority of the stuff in the universe is composed. Check thunderbolts.info for more.
Water
Carbon.
Plasma. It makes up more than 99% of visible matter in the universe, and most of the invisible matter.
Matter makes up anything that has mass.
atoms atoms
don't matter!!
carbon makes up all living thinks
In astronomy, the interstellar medium [See Link] is the gas and dust that pervade interstellar space: the matter that exists between the stars within a galaxy. It fills interstellar space and blends smoothly into the surrounding intergalactic space. The energy that occupies the same volume, in the form of electromagnetic radiation, is the interstellar radiation field.The interstellar medium consists of an extremely dilute mixture of ions, atoms, molecules, larger dust grains, cosmic rays, and (galactic) magnetic fields.
plasma
The most abundant element in the universe is hydrogen, which makes up about three-quarters of all matter! Helium makes up most of the remaining 25%
The most abundant element in the universe is hydrogen, which makes up about 3/4 of all matter. Helium makes up most of the remaining 25%. Oxygen is the third most abundant element in the universe.