Answer:
Pyrogens are substances which, when injected into the mammalian body, will cause a variety of symptoms, the most recognisable of which is an increase in core body temperature.
Explanation:
The body is able to regulate temperature in response to signals from the nervous system. When bacteria are destroyed by leuckocytes, pyrogens are released into the blood. Pyrogens reset the body's thermostat to a higher temperature, resulting in fever.
Special cells in the skin<span>, called melanocytes, make two different types of melanin, eumelanin and pheomelanin. ... Melanin helps </span>protect our skin<span> and hair by filtering out potentially harmful ultraviolet (UV) radiation from the </span>sun. The UV light from thesun<span> can </span>damage DNA<span> and cause cancer</span>
Charles Darwin's theory of evolution unifies all of biology.
Scientific process of experience useful observation
