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animals that have a true coelom, which is a fluid-filled body cavity completely lined with...

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these indicators move in conjunction with the business cycle; such as real GDP; unemployment...

coal that is heated in the absence of air to about 1 000 °C to remove volatile substances.

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boundary between two air masses where a cold, denser air mass is moving towards warmer air

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the tube that carries urine from the nephrons to the ureter via the renal pelvis.

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