People and animals have worked together for thousands of years. Some dogs guard against enemies, while others herd cattle. Cats hunt mice and other rodents, preventing them from stealing food and…
For thousands of years, farmers have improved their crops by crossbreeding plants that have good traits. They take pollen from one plant and add it to the flowers of another plant to produce a…
Ligers—the result of crossbreeding lions and tigers—have roamed animal preserves and sanctuaries for years. It wasn’t until recently, however, that these intriguing animals gained wide fame—…
Post-Mendelian Inheritance FactorsGenetic Variation and Natural SelectionIntroductionNatural SelectionPost-Mendelian Inheritance Factors Recall from Inheritance that most animals, including you,…
Chinese New Year is the longest and most important celebration in the Chinese calendar. The new year begins on the first day of the Chinese calendar, which usually falls in February, and the…
NIBLACK, Silas Leslie, (cousin of William Ellis Niblack), a Representative from Florida; born in Camden County, Ga., March 17, 1825; attended the common schools; studied law; was admitted to…
Indicates that part of a word of more than one syllable has been carried over from one line to the next: During the revolution, the nation was be-set with problems—looting, fighting, and famine.…
explorerBorn: c. 1371Birthplace: China An admiral in the Imperial Chinese navy, Zheng He made seven voyages to Southeast Asia, India, and Africa to explore and trade. In 1405 Zheng made his first…
BAILEY, Joseph, a Representative from Pennsylvania; born in Pennsbury Township, Chester County, Pa., March 18, 1810; attended the common schools; learned the trade of a hatter, which he…
