Beyond helping plants produce better crops, nitrogen-fixing microbes might also
A) improve the taste of vegetables through higher amounts of nitrogen.
B) allow trees and plants to suck up and break down industrial contaminants.
C) create new varieties of plants that can grow in difficult climates.
D) give off dangerous amounts of nitrogen into the soil as pollutants.
The correct answer is B) allow trees and plants to suck up and break down industrial contaminants.
Explanation: Nitrogen-fixing microbes not only enhance soil fertility by converting atmospheric nitrogen into a usable form for plants, but they can also assist in bioremediation. This process helps plants and trees absorb and break down harmful industrial pollutants in the soil, contributing to environmental health.