You may want to differentiate the variable names you use for storing the results from your first and second chi-square tests. You don't want to forget or mix up the numbers from your results. You can also set comments around your code to remind yourself of what you were thinking.
https://github.com/maeve70/intro-data-capstone-biodiversity/blob/1d3be458f37586b48ea8c82acaebb48a6d3c971a/BiodiversityProject/biodiversity.py#L275-L277
You may want to differentiate the variable names you use for storing the results from your first and second chi-square tests. You don't want to forget or mix up the numbers from your results. You can also set comments around your code to remind yourself of what you were thinking.