An astronomer studying planets outside the earth’s solar system has analyzed the atmospheres of four planets. Which of these planets’ atmospheres would be most able to support a colony of humans?
A.

Planet A: 76% Nitrogen, 23% Oxygen, 1% Other

B.

Planet B: 82% Nitrogen, 11% Oxygen, 7% Other

C.

Planet C: 78% Nitrogen, 1% Oxygen, 21% Other

D.

Planet D: 27% Nitrogen, 3% Oxygen, 70% Other

Question

An astronomer studying planets outside the earth’s solar system has analyzed the atmospheres of four planets. Which of these planets’ atmospheres would be most able to support a colony of humans?
 A.	
 
Planet A: 76% Nitrogen, 23% Oxygen, 1% Other
 
 B.	
 
Planet B: 82% Nitrogen, 11% Oxygen, 7% Other
 
 C.	
 
Planet C: 78% Nitrogen, 1% Oxygen, 21% Other
 
 D.	
 
Planet D: 27% Nitrogen, 3% Oxygen, 70% Other

abhisar · Answer

Earth has 78% Nitrogen, 21% oxygen & 1% other, now guess

anonymous · Answer

@Abhisar

anonymous · Answer

um that doesnt match any of the answe choices

abhisar · Answer

look for the one which has almost same composition as that of earth

shrutipande9 · Answer

i guess its A...the percentge are very close to the percentage of earth...

abhisar · Answer

isn't it A ?

anonymous · Answer

well, it all depends on the amount of gasses and bad things the planet has. a website i would suggest would be google and once you get to that point then search for updates from NASA and see if they have any answers for you