However at times this balance in nature is disturbed by human activities a number of po

问题补充：

However, at times this balance in nature is disturbed by human activities, a number of possibly unforeseen effects.

A. lying in

B. calling in

C. taking in

D. resulting in

答案：

A. lying in

B. calling in

C. taking in

(答案→)D. resulting in

解析：考察动词短语辨析。A在于；B召集；C吸收，理解，欺骗；D导致；句意：然而，这种自然的平衡被人类的行为打破了。导致很多难以预料的可能的影响。根据句意说明D正确。