Answer:
Explanation:
number 1 is the fourth one and number two is the first one
Anatomy. study of structures.
bacteriology. study of bacteria.
botany. study of plants.
cytology. study of cells.
ecology. study of the environment.
embriology. study of developing organisms.
It is antigen a,antigen b and no antigen
The answer is all of them. I just took the test. Hope this helps! :)