PNL report for apartment complex

[Thomas Oakes]

Hey y'all!  I am looking at a PNL report for an apartment complex, and I am confused about a couple things.  These might seem like dumb questions, but hey, I'm brand new to this!  

1.  What is the depreciation expense?  Does that actually get paid out to someone?

2.  The apartment said that the tenants pay all utilities....so why is it on the PNL report being counted as an expense?

3. Is the mortgage interest expense just the mortgage payment?

4. What is Proforma?

Thanks for all your help guys!