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28 Feb 2019, 02:26
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Hello,
Although I answered this question correctly, I still have a lingering doubt about how to disprove E. Could someone help me understand why E would be wrong?
Thank you!
Although I answered this question correctly, I still have a lingering doubt about how to disprove E. Could someone help me understand why E would be wrong?
Thank you!
28 Apr 2019, 09:20
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KHow
Quote:
We are told that "classes in an urban and a rural school grew plants in greenhouse at their schools and filtered the greenhouse air to eliminate sulfur dioxide."
So we given that the air was filtered to ELIMINATE the sulfur dioxide. Sure, the urban school may have changed the filters more frequently in order to do so, but the result would be the same: sulfur dioxide was eliminated from both greenhouses, regardless of how many filters were used by each school.
What matters is that sulfur dioxide content was effectively removed as a variable. The means for doing so at each school is not actually important.
I hope that helps!
08 Nov 2022, 03:52
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We need to know whether two experiments were conducted in same environment or not
so option D
so option D
