Question

what is the reason of black vomiting ?​

Answer 1

Answer:

many types pollution..........

Explanation:

Mark me as brainliest

Answer 2

Hello Mate,

Coffee ground vomitus owes its appearance to the presence of old blood in the vomit. The amount of time the blood remains in the gastrointestinal tract before appearing in the vomit will determine its color and shade. A more extended period will result in a darker color, which may be dark red, black, or brown.....

Hope this helps you