Do these four animals have invertebrates? a. rattlesnake b. woodpecker c. worm d. bear

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Which lists the organs in the correct order as food passes from the mouth to anus?

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.