Answer:
I think it is A.
Explanation: A anticodon is the complimentry base to mRNA.
The pulmonary structures refers to the organs of the body that are involved in the breathing process. These include the nostril, the oral cavity, the trachea, the two lungs, etc. Humans take oxygen from the environment to facilitate the respiratory process, at the same time they release carbon dioxide to the environment using the pulmonary structures.
Cloning and stem cell harvesting. I just had a question like that in my biology class
