Galileo Galilei was a physicist, an astronomer, and a mathematician. He improved the telescope, and was the first person to use it to study the skies. He was the first to see the four moons of Jupiter and the first to discover the rings of Saturn. he invented the rings of saturn and he dicoverd the comuter.xx happy reading.e improved the telescope, and was the first person to use it to study the skies. He was the first to see the four moons of Jupiter and the first to discover the rings of Saturn. he invented the rings of saturn and he dicoverd the comuter. xx happy reading.
In male mammals, a double negative feedback loop has evolved allowing separate regulation of testosterone biosynthesis and sperm production. A dual system allows an organism to better conserve energy while still remaining optimally functional.
Answers. 1  There are actually countless feedback loops in the human body, so it would be quite difficult to pinpoint them all. Generally, though, positive feedback loops cause some kind of amplification, and negative feedback loops work to maintain conditions at a certain level. Furthermore, negative feedback loops generally work to shut themselves off, whereas positive feedback loops must be shut off by a different set of mechanisms. An example of a positive feedback system would be blood clotting. When you get injured, the damaged tissue releases chemical signals that activate platelets. These platelets release chemicals that activate other platelets, and so on and so forth, until lots and lots of platelets are activated and clots form. Once the clotting has been taken care of, separate signals are used to shut off the cascade. Negative feedback occurs in a lot of processes that maintain homeostasis.