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How does a chameleon change its color?
Can animals talk?
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acid algae animals ants bacteria bees birds birth blood blue body bones brake brown algae burn called Cape Hatteras carbon carbon dioxide cause cave cells chemical chlorophyll cholesterol chromosomes cold color cone cells contain coral cubic earth earthquake eggs electric current electrons energy eyes feet female fish flow force friction give glands glass grow hair heat hive homing pigeon hour human hypothalamus insect known layer leaves light liquid live liver magnet male mammals mass melanocytes miles miles per hour million minerals molecules moon nerve nest nitrogen ocean oxygen penicillin photosynthesis pigment PLANETESIMAL plants pounds pressure produce rays reach Rh factor rock salt sand scientists sense skin skull smell sound species spider square inch starfish substance sunspots surface tail takes tell temperature tiny tion tissue tree tube X chromosome