Short Answer to a Environment Related Question (Reading Required!)

Question: Environmental sustainability challenges can be conceptualized with the tragedy of the commons. Please explain what the tragedy of the commons is, why it arises, and what the effects are for common pool resources and public goods. (1 paragraph) Reading will be provided. Please answer the question using information from the reading only. High quality answer needed! It's only one paragraph, so DON'T repeat yourself, DON'T write a whole essay about it, please answer the questions in a straight forward manner. Since the answer will not very long, please take the time to read through the reading and understand it perfectly before you answer the questions. It's very important to answer the question with high-quality paragraph!