TN TP and CHLA are commonly used variable names in the literature so you can use the following variable names in your code in this assignment tn tp and chla note they are lower cas

Define a function trophiclevelindex(chla , tn, tp) that takes values for Chorophyll-a (CHLA), Total Nitrogen (TN), and Total Phosphorus (TP) and returns the Trophic Index (TLI3) using the calculation below.