What length of time does the geologic time scale cover?
a. 2.0 million years
b. 4.6 billion years (my answer)
c. 20.5 billion years
d. 10.1 million years

Geological time scale covers the current age of Earth which is approximately 4.6 billion years.

In short, Your Answer would be Option B  [ You were correct ]

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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.

The teacher is mostly talking about the distillation of a mixture