B. The ability to respond to the environment good decision
B. CO2 levels in the atmosphere could increase and contribute to global warming problems.
The answer is Deoxyribose
The answer is; cell surface receptors that are recognized as antigens by the recipient's immune system.
Therefore the organ is attacked as a foreign substance . This is why organ transplants are given by the closest family member to reduce the antigen variability that causes transplant rejection. Tissue typing is done to ensure that the organ or tissue is as similar as possible to the tissues of the recipient.