Well there is Google for a reason. "Definition of nucleic acid". "What is nucleic acid". I'll give you the definition though. A complex organic substance present in living cells, especially DNA or RNA. The molecules consist of many <span>nucleotides linked in a long chain.</span>
Selective pressure and an adaptation. Having the adaptation allows the organism to survive long enough to pass their genes. Without a selective pressure, the adaptation would just be a trait
Bacteria play a role in the nitrogen cycle because:
The bacteria’s helps in breaking down the organic materials which has nitrogen in it, and helps in giving the nitrogen back to the cycle. Bacteria helps in breaking down of the leaves and then it diffuses the nitrogen to the soil. Prokaryotes also plays an important role in the nitrogen cycle. The nitrogen fixing bacteria present in the root zone of plants basically in the soil, helps in conversion of the nitrogen into ammonia. Then the nitrifying bacteria converts the ammonia to the nitrites or can say nitrates.
The fruit I think
Hope this helps :))
