The document discusses various constitutional provisions related to environmental laws in India. It explains that the constitution is the highest law in the legal hierarchy, followed by acts passed by parliament/state assemblies. Rules and notifications are also discussed. It provides details on the process of enactment of laws, and how the constitution, acts, rules, and notifications are related. Key environmental provisions in the constitution like fundamental duties to protect the environment are highlighted. The document also discusses how various environmental laws fit within the structure of the constitution in terms of the lists that divide powers between parliament and state assemblies.