Organ systems. Organs are grouped into organ systems, in which they work together to carry out a particular function for the organism. For example, the heart and the blood vessels make up the cardiovascular system
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Father hunts and provides food for his wife and family.
Also referred to as Dixieland music, hot jazz got its name from its blazing tempos and fiery improvisations. The popularity of Louis Armstrong’s early bands was instrumental in spreading hot jazz to Chicago and New York. Hot jazz remained popular until a surge in swing<span> bands in the 1930s pushed hot jazz groups out of the clubs. </span>
