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DK Science: Genetics

LOCATION OF CHROMOSOMES CHROMOSOME STRUCTURE DNA DOUBLE HELIX CHROMOSOME SET GENES INHERITANCE FIND OUT MORE Genetics is the study of the instructions, contained in cells, for how our…

DK Science: Light

WAVES AND PARTICLESLIGHTHOUSETRANSMISSION OF LIGHTLIGHT SOURCESSHADOWSFIND OUT MORELight makes the world seem bright and colourful to our eyes. Light is a type of electromagnetic radiation that…

DK Science: Nervous System

PARTS OF THE SYSTEM NEURONS PARTS OF THE BRAIN NERVES CENTRAL NERVOUS SYSTEM REFLEXES FIND OUT MORE The nervous system is the body’s main control system. It is made up of the CENTRAL…

DK Science: Respiratory System

BLOOD SUPPLY LUNG AIRWAYS ALVEOLI GAS EXCHANGE IN ALVEOLI BIOGRAPHY: JOHN SCOTT HALDANE Scottish, 1860-1936 SPEECH BREATHING FIND OUT MORE The respiratory system provides your body…

Timeline: Pirates

Notable events in pirate history, from 700 B.C. to the present by Mark Hughes c. 700 – 67 B.C. • 700–1820 • 1991–2007 • April 2008–present c.…

Anatomy and
Physiology: Sympathetic: Yikes!

Sympathetic: Yikes!Anatomy and PhysiologyThe Central and Peripheral Nervous SystemsYou've Got Some Nerve!Gyri and SulciThe Control CenterSensory and Motor ControlThalamus: The Switching…

Hyphen

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.…

Joseph BAILEY, Congress, PA (1810-1885)

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…

Chinese New Year

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…