You may know that Ernest Shackleton was a famous explorer of Antarctica. What plants would he most likely have encountered as he traveled the Antarctic

Deschampsia antarctica and Colobanthus quitensis

Explanation:

Only two species of flowering plants grow on the continent, Deschampsia antarctica and Colobanthus quitensis. Several lichen and moss species and some microscopic fungi and various bacteria have also been identified.The life of Antarctica is of course affected by climate that is pretty harsh.

What area are in blue

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.