Answer:
The damage to ozone layer is done by halogens such as Chlorine and Bromine.
Sex differences are biological and gender differences are culturally prescribed. Sex differences refers to the difference in behavior and mental functions between male and female as a result of biological difference while gender differences refers to the differences that occur between male and female as a result of cultural factors.
I don't know if this helps or not but you would want to know the age of the rock (absolute dating) and from there you will be able to know the age of the fossil and what caused it to die.
Heat and light (campfire), chemical ( beans as food), and kinetic (you hiking).