B.
Perspiration, or sweating, is the greatest source of fluid loss from the body.
blood vessels dilate, swelling occurs, phagocytes ingest foreign bacteria or viruses.
Electricity is the manifestation of traveling currents. These currents however are unable to move unless one were to complete a "circuit" (Word you are looking for). If the circuit is not completed electricity doesn't travel.
Answer:
Food source and space.
Explanation:
With more animals, more food and space is required. With a sudden growth there may not be enough sufficient.
The food source could quickly run out, and same with space.
The answer is that they use food inspections to reduce food poisoning
