Question

1. based on its location in the h - r diagram, we know that our sun is made mainly of what two elements?

carbon & hydrogen
hydrogen & helium
hydrogen & oxygen
oxygen & carbon

Explanation:

The Sun is a main - sequence star. Through nuclear fusion processes, it is primarily composed of hydrogen and helium. Hydrogen is the fuel for nuclear fusion in the Sun's core, and helium is the product of this fusion. This composition is well - known in astronomy and astrophysics, and is not dependent on its location in the H - R diagram for this basic fact.

Answer:

B. Hydrogen & Helium