An ecological system is a

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Q: (SSC/0)
An ecological system is a
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question_subject: 

Geography

question_exam: 

SSC

stats: 

0,13,52,13,25,2,25

keywords: 

{'ecological system': [1, 0, 0, 0], 'bioecological system': [1, 0, 0, 0], 'biological system': [1, 0, 0, 1], 'biogeochemical system': [1, 0, 0, 0], 'physicochemical system': [1, 0, 0, 0]}