Poor people have me, rich people need me, and if you eat me, you'll die. What am I?

I'M A DOT IN PLACE All the info you need to solve this riddle is contained in the line above. Just remember to use all of the letters, and don't use the apostrophe.

Not a trick, not pretend, nor some imagined deal, I'm what your senses prove and what your heart can feel. I stop the question 'Is this true or surreal?' Name me in one short word

I am not moving and I am correct.....but only twice a day.

I'm highly determined and persistent, but if I'm split into three, I become meager distribution to a large community. My first three are two more than my length. My last four a bustling place to live, but not for everyone. I can be used to describe D.