Shauna got an a on her chemistry test because she studied really hard for it.
should there be a comma before ''because"

Read the excerpt below and answer the question. she was a small woman, short and straight-waisted like a child in her brown cotton gown. her forehead was mild and benevolent between the smooth curves of gray hair; there were meek downward lines about her nose and mouth; but her eyes, fixed upon the old man, looked as if the meekness had been the result of her own will, never of the will of another. in at least one hundred words, explain how this excerpt uses explicit and implicit details to describe sarah penn.

Why are reading and writing necessary in today’s world

Tap out the stresses as you read line 9. which analysis best describes the rhythm and its effect on meaning