The answer is A, Using reusable shopping bags at stores
<em>Answer </em><em>is </em><em>- </em><em>D </em><em>the electron transport </em><em>chain </em><em>combined </em><em>with</em><em> </em><em>chemiosmosis </em>
Answer:
It has a pH of 7, so your answer is therefore B.) 7.