2. b. Now conservationists have placed 2,000 adult European oysters and more than 30,000 juveniles on the seabed of the lough. 3. b. False. Scientists hope the shellfish will form a natural reef and ...

一种彩虹色的狼蛛、一种毒蛇和一种手指呈钩状的毛茸茸的长臂猿之间有什么联系？它们都被列入了一份高度濒危物种的名单中，一英国慈善组织表示将于今年优先救助这份名单上的动物。