Name at least 3 disadvantages to using alternative sources such as wind, solar and nuclear energy? Please help it is past due by a lot

1.Expensive Storage Costs.
2.Not Always a Commercially-viable Option.
3.It Still Generates Pollution.

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.

Iam not going to tell you