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animals that have a true coelom, which is a fluid-filled body cavity completely lined with tissue that is derived from the mesoderm.
the trapping of the sun's heat energy by certain gases in the atmosphere, e.g. carbon dioxide...
a small, circular opening in the exoskeleton of insects that allows air to enter the insect's...
the gradual wasting away of the body caused by severe malnutrition, in the form of inadequate...
chlorofluorocarbons (CFCs) are organic compounds that contain carbon, chlorine and fluorine.