How is a leap year related to the time it takes Earth to revolve around the sun?

The time it takes to revolve around the sun in a year. It takes Earth 365 days plus 1/4. After you add up 4 years, you will earn that extra day.

Explanation:

an informal structure in a bureaucracy would be something like so-called "office politics". where there's a formal structure set up for the organization, but then an informal subculture as well that has a way of organizing the bureaucracy further. this can be positive because it sets up an added degree of organization, albeit informal, within the bureaucracy.

answer; epigenetics;