75. Which of the following do all terrestrial biomes have in common?
(A) clear boundaries between adjacent biomes
(B) annual average rainfall in excess of 25 cm
(C) cold winter months
(D) a distribution predicted almost entirely by rock and soil patterns
(E) vegetation demonstrating vertical stratification
答案:登入後查看
統計: 尚無統計資料
統計: 尚無統計資料