Agarden supply company has an advertisement selling beneficial bacteria. they claim that the bacteria will gardeners grow better gardens because of better soil. what can some bacteria do for soil?

a. provide water
b. improve fertility
c. increase clay content
d. slow down weathering

The right option is; b. improve fertility

Bacteria are ubiquitous microorganisms that can be found anywhere including soil. Some bacteria such as Rhibozium, Azotobacter and Azospirillium improve soil fertility by enriching the soil with various nutrients such as nitrogen and phosphorus. They also improve the soil structure and they decompose organic matter in the soil which provides nutrients for plant growth.