Name a good science fair project

1. It needs to be 8th grade level
2. It can't involve bacteria, fire, or human or other vertebrae animals
3. There is a bunch of other limitations but please don't answer this for points, answer this with a good topic idea

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

Why do mountaineers become breathless as they reach high altitudes

What determines whether a particular cell is able to respond to a hormone?