Avolcanic landform which consists of many layers of lava flows may look like a

Lava flows

Explanation:

Lava washes are the most common products on Earth. Lava is magma that, during its slow ascent through the earth's crust, reaches the surface. Most lavas crystallize during the eruption, due to chemical imbalances induced in magma as the surface approaches. The laundry continues to solidify during the eruption due to the loss of heat to the ground and the atmosphere. As a result, the flows begin to form channels or tubes.

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; ///any two strangers are likely to share many coincidental similarities;