A项Thecharacteristicsofdart-poisonfrogs(箭毒蛙的特性);B项Thehabitatofdart-poisonfrogs(箭毒蛙的栖息地);C项Theroleofdart-poisonfrogsintheirecosystem(箭毒蛙在生态系统中的角色);D项Thevariouswaysdart-poisonfrogscancamouflagethemselves(箭毒蛙自我掩盖的种种方式)。根据文章第一段第一句“Youmightnotnormallythinkof...
(阅读理解题15分)You might not normally think of frogs as being colorful, but these frogs definitely are-the dart-poison frogs of Central and South America. They have striking colors-often yellow with black stripes or deep blue with black spots.Beyond being nice to look at, these markings ha...
How Poison Dart Frog got its Colorful SkinAndrei
From the iridescence ofbutterfly wingsto the shocking red of a poison dart frog and the shifting patterns of octopus skin, animals make a riot of colors that are more than just decorations; they are signals to mates, warnings to predators, and life-saving camouflage. Colors can be made by ...