need help with anatomy and physiology question?

1.)blood leaving the intestines is acidic. why?

2.)john fell and fractured his lower spine and transects the lumbar region of his spinal cord, how will his micturition be controlled from now on?

3.)the clearance of glucose that is filtered at he glomerulus is less than its GFR glucose is therefore____?

4.)a resident of a low altitude moves to a high altitude country in the rocky mountains, what would u expect to observe?

5.)mr pace works in a factory that manufactures glue, the glue contains benzene, which is toxic to cells in red marrow, mr pace is experiencing severe nosebleeds and small hemorrhages in his skin, what is the connection between the bleeding problems and the benzene?

6.) in the carbonic acid bicarbonate buffer system what do increased CO2 levels cause?

7.) steven has just eaten a large order of heavily salted french fries, some pickled eggs, and salty cheese, how will consuming this much salt affect his physiology???