Afarmer is concern about the nitrogen levels in her soils. what can she do to ensure that the nitrogen bacteria are replenished in the soil?

the farmer can grow the plants like :  peanuts , pea plant , soya bean etc ...

In order to replenish the soil the farmer grow wheat or barly in the first year .

This is followed by growing leguminous plant like pea or soya bean in the next year, this helps in in replenishing of soil with nitrogen .

sex cells are usually half's then they find another half and make a fertilize egg