What is the role of these bacteria in the nitrogen cycle??

A- to absorb nitrogen-containing compounds from the soil.

B- to release free nitrogen into the atmosphere.

C-To break down nitrogen-containing compounds in dead organisms.

D- to convert free nitrogen into usable nitrogen.

The third choice .. (:

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.