Help me someone needs to be reasonable

For this assignment, make sure you post your initial response to the Discussion Area by Saturday, October 5, 2013.

Fluid, Electrolyte, and pH Balance

Utilizing knowledge from your learning and assigned readings, respond to the following questions:

1. Why does maintaining fluid balance in older people require a higher water intake than in a normal, healthy adult under age 40?
2. Why does potassium concentration rise in patients with acidosis? What is this called? What effects does it have?
3. Saline solution is used to reverse hypotonic hydration. Are body cell membranes permeable to saline? Explain your response.
4. Explain the renin-angiotensin mechanism.
5. Explain how ADH compensates for blood that contains too many solutes.