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Nematoda

(Encyclopedia) NematodaNematodanĕmˌətōdˈə [key], phylum consisting of about 12,000 known species, and many more predicted species, of worms (commonly known as roundworms or threadworms). Nematodes…

Marcy, William Learned

(Encyclopedia) Marcy, William Learned, 1786–1857, American politician, b. Southbridge, Mass. He settled in Troy, N.Y., where he practiced law and, after serving in the War of 1812, held local offices…

acoustics

(Encyclopedia) acousticsacousticsək&oomacr;ˈstĭks [key] [Gr.,=the facts about hearing], the science of sound, including its production, propagation, and effects. Various branches of acoustics…

People in the World

“When in Rome, do as the Romans do” is a famous saying about customs. But what exactly do the Romans and other people do that is so different? Where do women wear rings in their noses to show they…

DK History: Mongols

WHAT WAS SPECIAL ABOUT MONGOL ARMIES? WHO WANTED TO RULE THE WORLD? BIOGRAPHY: GENGHIS KHAN r. 1206–1227 FIND OUT MOREThe Mongols were nomadic tribes from the steppes, or grasslands, of central…

Scott, Winfield

(Encyclopedia) Scott, Winfield, 1786–1866, American general, b. near Petersburg, Va. Although vain and pompous (he was called “Old Fuss and Feathers”), Scott was also generous, fair-minded,…