Answer: Roles of DNA polymerases and other replication enzymes. ... which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. ... Topoisomerase also plays an important maintenance role during DNA replication.
Explanation:
hard to explain
It can be because there are some parts around that arent getting water
The content of vaccine varies from vaccine to vaccine but it has some live form of the disease in the vaccine
Vaccine work by injecting a small amount of virus in the blood stream along some other agent which causes the body to produce antibodies which fight the infection
The school going kids receive vaccine because their body is no immunity and likely to be a carrier of diseases and spread them.