Explanation:
When light shines on an object, it is reflected, absorbed, or transmitted through the object, depending on the object's material and the frequency (color) of the light. ... However, because light can travel through space, it cannot be a matter wave, like sound or water waves.
When parallel light rays hit a concave mirror they reflect inwards towards a focal point. Each individual ray is still reflecting at the same angle as it hits that small part of the surface. ... Light rays travel towards the mirror in a straight line and are reflected inwards to meet at a point called the focal point. Opaque objects block light from traveling through them. Most of the light is either reflected by the object or absorbed and converted to thermal energy.
Also, when light is reflected from a mirror, it bounces off at the same angle in the opposite direction from which it hit. ... If the surface is concave, or curved inward, a group of light rays from a distant source is reflected back toward a single location known as the focal point
Hi there
Facts about the Great Plains
1) They support one of the lowest population densities in the United States
2) Occupy around 500,000 miles of west-central North America
3) Millions of American bison roamed the Great Plains before their near-extermination by market hunters in the late 1800s
4) Through dedicated conservation efforts, bison have made an impressive comeback both on public and private lands.
5) Along wildlife other than bison were pronghorn, elk, mule deer, white-tailed deer, etc.
6) Cast in the rainshadow of the Rockies, the Great Plains harbor the greatest remaining expanses of prairie, a highly-endangered habitat, in the country.
7) While many presume the Great Plains to be relentlessly level, the province actually contains much topographic variety.
8) There are island mountain ranges, especially on the Missouri Plateau---the Bears Paw Mountains, the Sweetgrass Hills, the Black Hills, for example.
9) The Great Plains of interior North America constitute one of the largest grassland expanses in the world
10) For thousands of years, human cultures as varied as the Kiowa, the Blackfeet, the Spanish and the Americans have explored, hunted, settled and fought over these vast spaces.
It has stable exports and imports as well as alliances
