Natural predators, disturbing from tourists, and pollution have all contributed to the decline of the California condor.

A construction kit consists of parts that can be _____ .

The Soay sheep, the old breed of sheep in existence, has changed little since 3500 B.C.E.

The Swedish scientist ________ to people who have done something important to help humankind.

A traveler can reach some of the village along the Amazon only by riverboat.

The western part of Oregon generally receives more rain than _______ the eastern part.

Fiber is important element in nutrition, and it aids in proteting the digestive tract as well.

________ porpoises and dolphins, whales are mammals.

The first European settlement of Australia left the city of Portsmouth in May 1787.

______, Luxor did not reach prominence until about 2000 B.C.E.

Starches provide people with important nutrients which they need them.

________ living in Birmingham, England, that the American writer Washington Irving wrote Rip Van Winkle.

The Bactrian, or Asian, camel can be identified by their two humps

________ known as "Stonehenge" has never been determined.

A trade center since antiquitu, Cataloniaitself has often been ruled by outsider.

Certain Paleolithic artifacts are given special terms _______ .

Early balloonists remained aloft in the air for relatively short periods.

No matter ________, Mozart was an accomplished composer while still a child.

At space camp, youngsters go through concentrated astronaut training but shuttle simulations.