Answer:
B
Explanation:
It protects us from harmful rays
Answer:
y is there so much letters?
Answer:
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space, carrying electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) light, ultraviolet, X-rays, and gamma rays.
Explanation:
If I understood the question.
Animals with non specific defenses against invaders use physical barriers, protein defenses, cellular defenses, inflammation, and fever.
Physical barriers include skin and mucous membranes, and secretions separate the organism from its environment. Proteins that protect the body non specifically includes the complement protein found in the blood, when they bind to an invader they stimulate inflammation, phagocytosis, and destruction of the invaders membranes. The others include, inflammation, fever and cellular defenses.