(Encyclopedia) Mesolithic periodMesolithic periodmĕzˌəlĭthˈĭk [key] or Middle Stone Age, period in human development between the end of the Paleolithic period and the beginning of the Neolithic…
(Encyclopedia) planetarium, optical device used to project a representation of the heavens onto a domed ceiling; the term also designates the building that houses such a device. A modern planetarium…
HOW ARE BIRDS’ BODIES DESIGNED FOR FLIGHT? HOW DO FEATHERS HELP BIRDS FLY? CAN ALL BIRDS FLY? WHAT DO BIRDS EAT? FOOT SHAPESBIRD CLASSIFICATIONNESTSMIGRATIONFIND OUT MOREBirds have wings covered…
(Encyclopedia) erosionerosionĭrōˈzhən [key], general term for the processes by which the surface of the earth is constantly being worn away. The principal agents are gravity, running water, near-…
Here are the key news events of the month organized into three categories: World News, U.S. News, and Business, Society, and Science News. World | Nation | Business/…
CANADA’S PROVINCES AND TERRITORIESFIND OUT MOREThe first people in Canada came from Asia 70,000 to 12,000 years ago, via a land bridge now covered by the Bering Sea. The “First Nations” spread across…
Tinkering with MarketsLook at These Prices!IntroductionLet's Stretch: Elasticity of DemandWhat Determines Elasticity?Tinkering with MarketsThe Price You Gotta Pay Up to now we have been examining…
Here are the best-selling children's books of all time (through the end of 2000), with author and year of initial publication, compiled by Publishers Weekly. OP means the book is no longer in print.…
