What gases occur in the same percentages throughout the layers of the atmosphere? /a. oxygen, nitrogen/b. nitrogen, water vapor c. water vapor, oxygen d. all gases are present in equal amounts in earth's atmosphere really need .

A. Oxygen and nitrogen. ( Just think NO nitrogen oxygen )

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.