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What does the immune system protect the body against?
changes of the internal body temperature
O changes in the temperature of environment
O changes caused by harmful pathogens
O changes in the pH of the blood

Answer 1

The immune system protects the body against harmful pathogens by mounting a defense to neutralize and eliminate them.

Step-by-step explanation:

The immune system protects the body against changes caused by harmful pathogens. Pathogens are disease-causing microorganisms like bacteria, viruses, and fungi. When these pathogens enter the body, the immune system recognizes them as foreign invaders and mounts a defense to neutralize and eliminate them. This includes the production of antibodies, activation of immune cells, and the release of chemicals to destroy the pathogens.

Learn more about Immune system protection against pathogens