Question

__ is a solute and __ is a solvent in the atmosphere of earth.
a water, oxygen
b oxygen, nitrogen
c oxygen, water
d nitrogen, oxygen

Explanation:

In Earth's atmosphere, nitrogen is the most abundant gas (about 78%) and acts as the solvent. Oxygen (about 21%) and other trace - gases are solutes dissolved in the nitrogen - rich atmosphere.

Answer:

B. Oxygen, nitrogen