Which statement best represents how structure relates to function? a. Some insects live longer than others. b. Many tropical birds can be taught to speak. c. Great white sharks have sharp serrated teeth for tearing into their prey. d. horse's mane is often black.

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Quick asap will give brainiest ! what best describes the same pattern of tides on earth throughout the day? neap tides spring tides semidiurnal tides nocturnal tides

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems