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A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on ...

Scullion

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A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on ...

A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on the fish.
A) Observational
B) Experimental

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JoannaMills

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Scullion Author

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7 years ago

My exam is literally tomorrow!

thanks

JoannaMills

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#3

7 years ago

Good luck on your exam!

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