問題詳情
15. The mature leaves of tomato plants that I grew in my backyard turn darkpurple. What kind of mineral nutrients you should fertilize the plant in orderto recover the green color?
(A)iron
(B) nitrogen
(C) phosphate
(D) potassium
(E) calcium
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