Positive feedback an occur in the body but it is much more rare than negative feedback. Some examples are blood clotting, lactation, uterine contractions during childbirth, and ovulation.
Gregor Mendel is called the father of genetics. He was a monk who studied pea plants to find out about genetics. He discovered many new things.
A:Discovered the dominant and recessive mode of genetic inheritance
A:http://www.biojuris.com/natural/index.html (Exact quote)
Gregor Mendel was carrying out experiments that would establish the foundation of modern genetics. In the classic experiments on peas performed by Mendel from 1857 to 1863, he found that each physical trait of the plant was controlled independently by its own unique pair of factors that he called elementen. These elementen are now known as genes. Each parent packages half of its genes into its gamete, the egg and sperm. Upon fertilization and conception, the embryo offspring inherits equal parts of its mother's and father's genes. The importance of Mendel's work went completely unrecognized during his lifetime. It wasn't until the early twentieth century when a new generation of scientists began to unravel the mechanism of heredity that the buried genius of his work was discovered.
The chemical energy in the fuel is a function of the mass of the fuel. Since a gallon of fuel expands or contracts with temperature, a gallon of cold fuel contains more energy than a gallon of warm fuel. The temperature gets colder the higher you go (up to the tropopause, that is) and consequently, more thrust is derived from each pound of fuel which translates to greater fuel efficiency.
Jets travel faster because of less atmospheric friction upon the aircraft. The engines are more efficient because of the colder air. The engines work by heating the air and it then it expands and exits the engine. When the air is colder (it easily gets -40 degrees up there) and the fuel air mixture is burned, the air expands alot more than if warm air was entering the engine. On a warm day a jet will not perform nearly as well as on a cold day.
Don't. Don't subject them to any loud or continuos noise, they're very sensitive creatures. You'll turn them into nervous wrecks.
You need to turn it off at the base of the sink. Or depending on the problem you may need to turn it off at the water main valve.