Brain tumor can form in the brain cells (as shown), or it can begin elsewhere and spread to the brain. As the tumor grows, it creates pressure on and changes the function of surrounding brain tissue, which causes signs and symptoms such as headaches, nausea and balance problems.
Answer:
renin-angiotensin mechanism, mediated by the renal tubules.
1. A poor economy
2. Little jobs
3. Small amounts of food in an area, little imports
4. Overpopulation
5. Weak education (This could lead to less people getting higher paying jobs)
