Answer:
D
Explanation:
Phenotypes are your physical traits and they can be altered by the environment. Your genotype is your genes and genetic code. This cannot be altered and is the instructions for making proteins.
It helps the urinary bladder stretch and hold urine. Then when full, it sends signals to the brain to make you feel the urge to pee.
This would be bacteria ; aka a prokaryotic cell
Cells are usually measured in microns. Subcellular structures might be measured in microns or/and nanometers