Running style of an ostrichHow a Tyrannosaurus stood upNo-one has ever seen a dinosaur in action. However, the bones and the joints of fossilized skeletons can give us clues as to how the animals…
(Encyclopedia) ass, hoofed, herbivorous mammal of the genus Equus, closely related to the horse. It is distinguished from the horse by its small size, large head, long ears, and small hooves. There…
(Encyclopedia)
CE5
Lead storage cell: At the lead-dioxide electrode, electrons from the circuit combine with lead dioxide and sulfuric acid to form lead sulfate and water. At the spongy-lead…
(Encyclopedia) sun grebe, common name for a tropical, mainly aquatic bird of the family Heliornithidae. Sun grebes, also called finfoots, are remarkable for their colorful, puffy-toed, webbed feet,…
(Encyclopedia) polecat, carnivorous mammal of the weasel family. The name refers especially to the common Old World polecat, Mustela putorius, found in wooded areas of N Eurasia and N Africa. Similar…
