Why is some poop green?

Answer 1

Generally, this is a sign of malnutrition - it's a sure sign that you've been nothing but junk food (or other "empty" calories). That - and that you are not getting the proper amount of certain vitamins/minerals that your body needs...

Perhaps someone else can provide a more SPECIFIC answer ;);););)

Answer 2

Ummmm.....Excess iron in your diet...??

Sorry, nobody touched this one and I could not resist.....