stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Earth & Sun Flashcards | StudBud
Earth & Sun
1 / 13
The Earth's atmosphere is mostly made up of which gases?
A
Helium & oxygen
B
Hydrogen & Oxygen
C
Nitrogen & oxygen with small amounts of carbon dioxide
D
Oxygen & carbon dioxide
Next
0
0
correct · 0:00
