Answer:
Rural to urban migration represents people moving from village to town.
Explanation:
This causes the cities to grow and to be overcrowded. People migrate from countryside to town to find better life standard. They are in search for better jobs, vivid social life and run away from rural living. Unfortunately this causes the villages to be abandoned and be forgotten.
The heal mountains are recognized by some geographer as picturesque scenery, exceptional mineral wealth, and geopolitical significance in Russian history
Lack of O2, hunger, hypothermia... Everything can be a problem when in Everest
Dr luceros team used looters trenches rather than dig new ones because they wanted to protect the site from further damage. This is because to prevent further destructions from their activity.
That is definitely Federalism.