Others argue that since the earth has endured a long string of ice ages in the last two millionto three million years, any warming is ________ to be temporary.
B
暂无解析
腋芽是不定芽
所以猛禽都是国家重点保护动物
对于大多数树种，密度越大，林分平均高越高
简述生物防火的特点
水汽由气态转变为液态的过程，叫（）
