Idk plastic bags, glass, anything that is not living.
Answer:
It is expected that after 10 generations the most common circumference will be 15 cm.
Explanation:
Stabilizing selection is recognized as a type of natural selection where the mean value of one trait is favored.
Obesity and genetic factors is usually a strong risk factor for many different diseases and it's no difference in this case - people/women who are obese and have a family history of breast cancer also possibly have a higher likelihood of developing it themselves.