The most abundant gases in Earth's atmosphere are nitrogen (about 78%) and oxygen (about 21%). Other gases, such as argon, carbon dioxide, and water vapor, make up the remaining percentage of the atmosphere.
Carbon dioxide (CO2) is the molecule that carries most of the carbon in the atmosphere.
The most polar bond would be between carbon and fluorine. Fluorine is the most electronegative element, creating a large electronegativity difference with carbon and resulting in a highly polar bond.
Carbon-12 is the most abundant isotope of carbon, making up about 98.9% of carbon found in nature. Carbon-13 is the second most abundant isotope, making up about 1.1% of natural carbon.
The most common isotope of carbon is Carbon-12, which has a mass number of 12.
the second most abundent gas in the atmosphere is oxygen and the first in nitrogen
grass
flour
Hydrogen
Nitrogen
nitrogen
Helium is the first member and the most abundent element in the known universe
Insects
aluminum
Wildebeast
Iron.
probably zooplankton