How much of your body’s heat do you lose by not covering your head in the cold?
Your mother was right.
You lose about half to three-fourths of heat from your head.
To galvanize steel means that a zinc coating is applied, either by “hot-dipping” the steel in molten zinc or by electroplating it in an electrolytic process. Thus protected against exposure, galvanized iron or steel is less liable to rust.
The colors red, orange, yellow, green, blue, indigo, violet make up a rainbow.
Bird guano is the accumulated excrement and remains of birds such as cormorants, pelicans, and gannets. Guano is 11 to 16 percent nitrogen, 8 to 12 percent phosphoric acid, and 2 to 3 percent potash. The excellent fertilizer is harvested from islands off Peru, Baja California, and Africa. Bat and seal guano is also highly…
A knockout punch causes a chain reaction in the victim’s circulatory system. The supply of blood pools in the abdomen, reducing circulation to the brain, and resulting in loss of consciousness.
There are about 200 million to 300 million sperm cells are contained in an average human ejaculation. Yet sperm cells make up only 2 to 5 percent of total sperm volume. The rest is composed of fluids, known as seminal plasma, that help keep the sperm cells alive.
The orbit of the moon around the earth is tilted at an angle of about 6 degrees from the plane of the earth’s orbit around the sun. As a result, the moon is usually above or below the line between the earth and the sun, except on certain predictable occasions.