water, salt, and organic compounds
Ribosomes are composed mainly of protein and RNA.
The thick filament is composed of the myosin molecule. The thin filament is composed of the actin molecule. Flexing the head of myosin provides the powerstroke.
Eat
Hair mainly consists of a protein known as keratin
The cell membrane is composed mainly of lipids. Phospholipids to be precise.
Water
The sun is composed of about 73% Hydrogen, 25% Helium, and 2% Oxygen... This means that the sun is mainly composed of Hydrogen
Limestone composed of mainly Cacieum Carbonate(CaCO3)
Nitrogen
water
Ribosomes are composed mainly of protein and RNA.
Jupiter is composed mainly of gases (hydrogen and helium).
The crust is composed mainly of alumino-silicates.
Cartilage
water
Cartilage
Sucrose