C
The houses are made to last for centuries
People who have a limited amount of food or resources tend to migrate, which can cause a increase of animal population. Humans are the leading cause of things like deforestation and extinction. Once humans leave, Bled will slowly regain it's natural resources, and animal populations will rise after resources become more common. Eventually resources will no longer be scarce.
Water is the control.......
Without the protection of their homes and support of their male family members, children and women refugees may experience discrimination, abuse, financial difficulty, unemployment, no housing, difficulty in travelling between places, victims of assault, and they may end up being sent back to their country of origin. Without the appropriate support and protection, many refugees can run into many difficulties when leaving their country of origin and setting up in a new country.