Which element is most common in a) in the earth’s crust b) in the hydrosphere c) in the atmosphere d) in space.
November 19, 2020 | education
| a) Oxygen. Its content in the earth’s crust is 46.6%.
b) Oxygen. Its content in the hydrosphere is 89%, since water makes up 71% of the earth’s surface.
c) Nitrogen. Its content in the atmosphere is 78.09%.
d) Hydrogen. Its content in space reaches 90%, since it makes up the bulk of cosmic bodies.
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