When was the DC Metro built?

When was the DC Metro built?

The Washington, DC Metrorail system is a regional rapid transit system consisting of five lines, 83 stations and approximately 103 miles of track. System completion as originally planned was achieved on January 13, 2001. Construction began on December 9, 1969, with the first stations opening on March 27, 1976.

Is balsa a hardwood or softwood?

Balsa wood is one of the lightest, least dense woods there is, and it’s considered a hardwood. The distinction between hardwood and softwood actually has to do with plant reproduction. All trees reproduce by producing seeds, but the seed structure varies.

What kind of poem is Beowulf?

Beowulf is the conventional title of an Old English epic poem consisting of 3182 alliterative long lines, set in Scandinavia, possibly the oldest surviving long poem in Old English and thus commonly cited as one of the most important works of Anglo-Saxon literature, and also arguably the earliest vernacular English …

What is the purpose of a caboose?

A caboose is a manned North American rail transport vehicle coupled at the end of a freight train. Cabooses provided shelter for crew at the end of a train, who were required for switching and shunting, and to keep a lookout for load shifting, damage to equipment and cargo, or overheating axles (hot boxes).

Why do we rub our eyes when we are tired?

Tired eyes get dry, and rubbing stimulates the lacrimal glands to produce more fluid. Tiredness also closes your eyes, so you may rub to keep them open. Finally, there’s a connection between the muscles that move your eyes around and your heart. When these muscles are stimulated, a reflex slows the heart.

Who discovered the molecules of water?

Water’s composition (two parts hydrogen to one part oxygen) was discovered by the London scientist Henry Cavendish (1731-1810) in about 1781. He reported his findings in terms of phlogiston (later the gas he made was proven to be hydrogen) and dephlogisticated air (later this was proven to be oxygen).

What does bald faced lie mean?

A barefaced (or bald-faced) lie is one that is obviously a lie to those hearing it. The phrase comes from 17th-century British usage referring to those without facial hair as being seen as acting in an unconcealed or open way.

Are there more chickens than people in the world?

In fact, there are approximately 19 billion chickens in the world. That’s almost three per person.