The finches adapted over time to better suit their environment that they were in -- the size and shape of their beaks changed as a result of natural selection.
I believe the answer is C.
Acetyl choline.............
The correct answer among the choices presented above is option D. The uterus is a pear-shaped muscular organ that houses the developing fetus. It is the organ located in the lower body of a female mammal. It is a major reproductive organ of most mammals.
