A 2 mile run is a form of activity

A 2 mile run is a form of physical activity.

Answer listing the cosequences of the options;

Of that are from eating black  foods or iron supplements. the most common condition causing  it is a bleeding ulcer.  black poop caused by blood indicate a problem in the upper digestive tract.     along with pain, vomiting, or diarrhea is cause to see a doctor right go see a doctor