yes you can but only women its called a period
yes
Yes, we can but its bad for you unless its, well, your own blood. (That's what I've heard, anyway)
Except for when you're a vampire hehehehe :)
humans use stomach acid to digest the food
Certainly, humans can digest blood, which is very nutritious; blood (from cattle) mixed with milk is the main component of the traditional Zulu diet, and even the European diet does include such things as blood pudding and blood sausage.
Animals have a circulation that humans don't have
No. Only humans have human blood.
No, humans cannot ingest any counties, Irish or not.
No, they need human blood.
It is called cellulose. Human lack enzymes to digest it.
The human body is able to digest dirt. In fact, dirt can even provide humans with some of the minerals they lack like iron, zinc, or calcium.
yes because its not for humans to digest and it smell really bad
fiber does not supply energy to humans , as it is not digested by humans ,the reason being that humans do not have enzymes that can digest fiber .
no. humans lack an enzyme to digest wood
In any mutualistic relationship, both parties are helped in a way. In the case of humans and bacteria, the human cannot digest all of the food that it eats. The bacteria eat the food that the human cannot digest and partially digest it, allowing the human to finish the job. The bacteria benefit by getting food, and the human benefits by being able to digest the food it eats.