Bacteria make up 90 percent of the microorganisms found in most types of soil. Many types of bacteria found in soil are categorized as decomposers in the food chain. What role do
decomposing bacteria play in maintaining the health of an ecosystem?
F Decomposing bacteria are taken up from the soil through the plants' root systems and serve
as food for plants.
G Decomposing bacteria break down dead organisms and return nutrients to the soil.
H Decomposing bacteria destroy the harmful bacteria in the soil that cause diseases in other
organisms.
J Decomposing bacteria build the immunity of other organisms to disease-causing bacteria.