Think about the various processes that take place in the body or in the natural environment and come up with a list of at least fivethat you believe represent redox reactions. You don't need to include formulas. Jut substances names or provide a description of each process.
3 answers
This is meant to be a mental exercise FOR YOU and not for me but I will get you started. For #1, what about the food we eat? All of the starches we eat eventually turn to CO2 and H2O and we get energy. You could use digestion of starches as a title for that one. Now you think of some other things you do all day.
working out
You could use carbon cycle as one; light and dark reactions in biology.