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Can someone help?
In which two regions is oxygen the second most abundant element by volume?
A: crust and hydrosphere
B:hydrosphere and troposphere
C: tropshere and core
D: core and crust

Respuesta :

Answer:B: Hydrosphere and Troposphere

Explanation:

Hydrosphere : This is the region of the earth that is composed mainly of water and oxygen but the major part of the hydrosphere is water while the oxygen is the second most abundant element.


Troposphere : This is the lowest part of the atmosphere which comprises of about 75% of the atmosphere and it contains about 78% Nitrogen and 21% of oxygen.