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valina [46]
3 years ago
14

A researcher notices a decline in organism and population numbers over several years in a stream environment. What human activit

y may have affected organisms and populations in this way?
Biology
1 answer:
PSYCHO15rus [73]3 years ago
6 0
Probably over-fishing so the organisms dont have enough food to eat. 
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Answer:

25%

Explanation:

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