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Which factors improve soil fertility? select three answers

A:humus

B:bedrock

C:horizons

D:nitrogen

E:manure

User Abby Sobh
by
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2 Answers

4 votes
The last one would be the correct answer
User Peter Jankuliak
by
8.0k points
1 vote
E, manure makes the soil fertile and ripe to grow. 
User Ferenc
by
7.9k points
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