The answer is the letter B. Electrical signals.
*Our brain and body communicates with each other by sending messages in the form of electrical signals.
Answer:
air, water, and a habitable earth
Explanation:
the resources are oxygen from air, fish from water, and fruits, vegetables, meat, and herbs that can help with health.
I believe the answer is respiration
A salt or ester of phosphoric acid, containing PO43− or a related anion or a group such as —OPO(OH)2.