Explain why laboratory safety rules are important.

it's for a essay please help

Proper lab safety prevents cross contamination.
Disease and bacteria are spread when lab procedures are not followed. The instruments used by students and professionals must be fully cleaned and sterilized to prevent the dangerous spread of these diseases and bacteria

The correct answer is d

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.