MCQ
What will happen if a wheat field is inoculated with bacterium Rhizobium?
- AThe soil will become rich in calcium.
- BThe soil will become rich in nitrogen.
- ✓There will be no effect on soil nitrogen.
- DThe soil will be rich in $O_2$.
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$A$. Over exploitation $B$. Co-extinction $C$. Mutation $D$. Habitat loss and fragmentation $E$. Migration
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