DISCUSSION: This is covered on lines 35-44. It’s a bit confusing.
The land in the experiment was recently cultivated. Some nearby land had been out of production for 20 years.
Researchers took soil from the land that had been out of production, and they spread the soil on the recently cultivated land.
Plants grew better on the recently cultivated land when researchers scattered the soil. This was because the soil had helpful microorganisms. (lines 38-41).
However, plants still grew better on the land that had been out of production (lines 43-44). That is, the land that had been out of production for 20 years.
The reason? The recently cultivated, farmed land was overrun with harmful microorganisms, and lacking helpful microorganisms (lines 44-50).
- This fact is out of context, it comes from lines 5-8. Lines 44-50 make clear that the problem with these particular plots of land was that they were overrun with harmful microorganisms.
- CORRECT. See lines 44-50.
- This is a fact from lines 8-12, it’s out of context here.
- It’s worse than this. Not only does farmed land lack helpful microorganisms: farmed land is full of harmful microorganisms (lines 44-50).
- This is backwards. The farmed land had harmful microorganisms (lines 44-50).
The land that was out of production had helpful microorganisms (lines 38-41).
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