Which elements are the main components of the sun?
carbon and oxygen
nitrogen and hydrogen
hydrogen and helium
helium and neon

The main components of the Sun are Helium and Hydrogen.

Explanation:

Sun is the only star present in Our Solar System around which 8 planets revolve.

Sun is made up of many elements, some of them are: Hydrogen, Helium, Carbon, Nitrogen and Oxygen. The percentages of these elements by mass in Sun are:

Hydrogen: 70%

Helium: 28%

Carbon, Nitrogen and Oxygen: 1.5%

Other elements: 0.5%

In Sun, nuclear fusion reaction takes place where hydrogen undergoes fusion with other hydrogen nuclei to form helium nuclei. Equations for nuclear fusion are given as:

Hence, the main components of the Sun are Helium and Hydrogen.

asthenosphere and convection

measure their densities same density, same sub