Answer:
I am not sure if this is what you are looking for, but possibly enzymes.
Specialized enzymes and chemicals are the body’s final defense against pathogens.
Probably a water-soluble vitamin like C.
Earth is approximately spherical in shape like all planets and stars. Earth is composed mostly of rock. Three-fourths of its surface is covered by a relatively thin layer of water (some of it frozen), and the entire planet is surrounded by a relatively thin blanket of air.