What is the continental shelf?
The continental shelf is an underwater ledge around the coastline of the world’s oceans.
The edge of the shelf lies at depths of between 360 and 480 feet.
The width may vary from a few feet to several hundred miles.
The scientist George Washington Carver (1864-1943) was trying to find ways to diversify southern agriculture. Long dependent on cotton, the South’s economy was threatened by the boll weevil and depleted soil. Carver showed that the neglected peanut, soybean, and sweet potato could produce hundreds of trade goods and replace soil minerals depleted by cotton. The…
In 1900, a hurricane in Galveston, Texas, with 15- to 20-foot waves swept over Galveston Island and drowned 6,000 people.
Shooting stars are not stars but meteorites, particles from space entering and burning up in the earth’s atmosphere.
According to a Gallup poll, washing the dishes far outweighs its closest competitors, cleaning the bathroom and ironing. Seventeen percent of those questioned listed doing the dishes first; only 8.8 percent named cleaning the bathroom and 8.5 percent named ironing, with 9.8 percent saying they didn’t know what they didn’t like.
The apple of one’s eye is the pupil, which was likened to an apple because, in the ninth century, it was believed to be a solid round mass.
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.