What would be a good purpose and hypothesis for a lab on natural selection?

Question

Ok so what we did was there were 6 groups of people, and each group had different tools like tweezers and forceps to pick up cat food. We all had to get as much as possible. There were 5 rounds, and after each one, the teacher told one person out of the team with the least food to join a different team

Heres my new purpose, but Im scared he'll say its wrong again (I've revised it twice already): To elucidate the effect of changes in the environment on a population, and what role variations play in natural selection

If variations affect an individual's chance of survival, the the people with the least beneficial variations will not be able to survive.

that was my hypothesis. Please help. I really want to get a good grade on this lab

Answer 1

The different tools illustrate natural selection. Some tools are more adapted to the task of taking out cat food from a can. The shifting of the students between groups illustrate that sexual reproduction which mixes the genes (A student being considered a gene) leads to more adapted organisms.