DNA is replicated by polymerase II enzyme in eukaryotes. The enzyme adds nucleotides complementary to the leading strand and then to an RNA strand that initiates the replication. When the 3' _ >5' exonuclease finds a mismatched complementary pair, it nicks and excises the bases. The polymerase II then matches the right base pair and continues with replication.
clearly is if the fungi get to u the first thing that gonna happn is you're going to get cancer and about bacteria stomach sickness diareah flu head ache and clearly its going to be hard for u to breath