問題詳情
7. After landslide happens and the part of the mountain slope slides down into the valley, vegetation slowly recovers byprimary succession. At the initial stage of the succession, plants growing on the landslide are limited by________.
(A) nitrogen.
(B) phosphorus.
(C) both nitrogen and phosphorus.
(D) light availability.
(E) too steep slope.
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增