Answer:
An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
Acid:Lemons, oranges, vinegar
Base:Soap, toothpaste, bleach, cleaning agents, limewater,
Explanation:
"Adequate shelter" is the one among the following choices given in the question that <span>would have the smallest impact on a populations size. The correct option among all the options that are given in the question is the fourth option or option "d". I hope that this is the answer that has come to your help.</span>