I think the right answer is b
You may be tired and short of breath, this could also result in fainting
This is actually called a competition. I would describe this relationship as negative where only one benefits. Some may see it as parasitism, as one will overpower the other and benefit while it suffers.
Answer: Body recognizes the self cells and non-self cells by the help of the markers that is found on the cell.
Explanation:
The body has the ability to recognize the difference between the cells of the body and the cells that are not of our body.
The body recognizes the cells as self or non self. The cells of the body has coating made of glycoprotein which acts as the identifying markers for the cells of the body.
The blood type is one of the best example to encounter the self and non self cell. The body recognizes the blood of another person as another protein and considers it as antigen.
