Na/K concentration in and out of the cell at the homeostatic level. It does this by pumping sodium and potassium ions in and out when it's needed of it in order to maintain the concentration of both ions stable across time.
<span>The term muckraker refers to reform-minded journalists who wrote largely for all popular magazines and continued a tradition of investigative journalism reporting; muckrakers often worked to expose social ills and corporate and political corruption. so there fore he was a journalist </span>
Answer:
Donald Trump
Explanation:
The current president of the United States is Donald Trump.