Can someone give me a brief overview of the executive branch?

The executive branch is the branch that enforces the laws made and revised by the legislature they have the power to veto or sign a bill to become a law if the president (head of the executive branch) vetos the bill it will go back to Congress and the system repeats itself

The constant presence of diseases or infectious agents within a given geographic area or population group. it may also refer to the usual prevalence of a given disease with such area or group. it includes holoendemic and hyperendemic diseases. a holoendemic disease is one for which a high prevalent level of infection begins early in life and affects most of the child population, leading to a state of equilibrium such that the adult population shows evidence of the disease much less commonly than do children (malaria in many communities is a holoendemic disease). a hyperendemic disease is one that is constantly present at a high incidence and/or prevalence rate and affects all groups equally. so probably family history.