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9. Which is the second most abundant element in the universe?
a. carbon
c. hydrogen
b. helium
d. oxygen
10. What object is formed from gas and dust particles which are pulled together
by gravity and no nuclear fusion has happened yet?
a. nebula
c. protostar
b. main sequence star
d. red supergiant star​


Sagot :

Answer:

9. B.Helium

10. It is a star

Explanation:

9. helium ia the second element in the universe while Hydrogen is the first.

10. A star is an object that forme from gas and dust particles