Freeze-thaw, onion skin (exfoliation), chemical and biological weathering
Breast cancer research has no impact outside of a lab.
But today in my own opinion breast cancer has started movements and now more cancers are out here today and there are no cures, so people are now investing more money to scientists to find treatments, and also scientists now don't have the solution to everybody's problems and this is causing distress to people.
The universe focuses on system
I am pretty sure the answer is “C. Two Daughter Cells”
