問題詳情
57. How did cacti reduce their need for water?
(A) By storing more food in their pulp
(B) By getting rid of their leaves
(C) By increasing their exposure to the sun
(D) By developing inner vessels to transport water
(A) By storing more food in their pulp
(B) By getting rid of their leaves
(C) By increasing their exposure to the sun
(D) By developing inner vessels to transport water
參考答案
無參考答案
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