What is the name of the element contain in nitrogen?

What is the mass density and radius of a giant star? When changing liquid propane gas cylinder the pressure relief valve should point i what direction? If for natural selection to occur in a population which two factors must interact? When studying the ages of oceanic rock scientists found that the rocks at the mid-ocean ridges were the youngest rocks and the rocks got progressively older the farther from the ridges the scientists? Is millimeters big or small? Is bauxite igneous or sedimentary or medimorphic? Why do plants need nitrites? Are latitude lines used to determine time zones? Which element group is not magnetic? What signs of a chemical change would you see or hear at a campfire? What types of organelles are in a white blood cell? Is soda with ice a element compound or homogeneous mix? How do you handle an unknown chemical? What is the Climate on Darwin Culpepper island? What planet is Liquid water covers most of its surface? What phase of the cell cycle occurs when the cell is actually growing? Is cactus a fern? Was Sir Isaac Newton a Jew? What particles in the heated compounds and production of the colored light? What is used to increase or decrease voltage that enters a house?