What are some topics for science fair projects? Mars regolith

What are some topics for science fair projects?

What are some topics for science fair projects?
Science Fair Project Ideas
Behavioral & Social Science. Human Behavior. Sociology.
Earth & Environmental Science. Environmental Science. Geology. …
Engineering. Civil Engineering. Electricity & Electronics. …
Life Science. Biotechnology. Genetics & Genomics. …
Math & Computer Science. Computer Science. Cybersecurity. …
Physical Science. Aerodynamics & Hydrodynamics.