The continued presence of vestigial structures suggests that these structures do not have a great impact on fitness, like in the whale, because even with these structures, the whale has been able to survive and reproduce.
Smoking and severe sunburn are linked to cancer.Getting a severe sunburn could lead to <span>melanoma skin </span><span>cancer and smoking could lead to lung cancer.
So the answer you are looking for is A. Cancer
I hope this helps!</span>
Reactant carbon dioxide and water
Product glucose and oxygen