What is the role of nitrogen-fixing bacteria in the nitrogen cycle

Nitrogen-fixing bacteria are  microorganisms capable of transforming atmospheric nitrogen into fixed nitrogen (inorganic compounds usable by plants).

A commonly known fact : More than 90 percent of all nitrogen fixation is effected by these organisms, which thus play an important role in the nitrogen cycle.

Explanation: Hope it helps:)

the answer is d.) homologous; have mammary glands

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: