The Greenwich Meridian (or prime meridian) is a 0° line of longitude from which we measure 180° to the west and 180° to the east.
Answer:
Edgar Allan Poe was an American writer, poet, critic and editor best known for evocative short stories and poems that captured the imagination and interest of readers around the world.
1. to keep in touch with friends and family.
2. To stay up-to-date with news and current events.
3. To fill up spare time.
'Vassals were the lowest class in the newly established government system's hierarchy.
<h3>
What is hierarchy?</h3>
A hierarchy is an arrangement of items (objects, names, values, categories, and so on). Hierarchy is a key concept in many disciplines, including architecture, philosophy, design, mathematics, computer science, organizational theory, systems theory, systematic biology, and social sciences.
A hierarchy can connect entities directly or indirectly, and it can connect entities vertically or diagonally. In a hierarchical system, the only direct links are to one's immediate superior or to one of one's subordinates, though a largely hierarchical system can also incorporate alternative hierarchies. Hierarchical links can extend "vertically" upwards or downwards by following a path with multiple links in the same direction.
To know more about Hierarchy visit:
brainly.com/question/13050649
#SPJ4
I think it's D
the desalination process is not very reliable .
hope this helps ! ((':
