It maybe seawater...if I’m correct but it depends on which element that you are talking about
The outside neurons are mainly composed of dissolved salts and or other chemical substances
The Federal<span> Reserve does </span>not<span> supervise or regulate </span>credit unions<span>. Federally chartered </span>credit unions<span> are regulated by the National </span>Credit Union<span> Administration, while state-chartered </span>credit unions<span> are regulated at the state level. The Fed is one of several banking regulatory agencies at the </span>federal<span> level.</span>