Which Continent Has the Highest Rate of Nitrogen Fixation

Question

Which continent has the highest rate of nitrogen fixation?
A) North America
B) Europe
C) Australia
D) South America

Accepted Answer

South America has the highest rate of nitrogen fixation, mainly due to the presence of the Amazon rainforest which fixes a significant amount of nitrogen into the soil through its vegetation and microorganisms. The other continents listed do not have as high rates of nitrogen fixation.