For this item, I would go with letter "D. physical destruction of marine habitats". Many of the modern ways of fishing poses an irreversible destruction to marine habitats. These practices include trawling, lining methods, purse seining, etc.
Answer:
temperature and pressure is the answer
Just to add on over time they have develiped a tuff outer layer to stop weather and insects from harming them.
Any radiation of any kind can cause cancer. So many things today can be connected to cancer that making the assumption that radiation for cervical cancer causes liver cancer is plausible.