The provision of the law in Section 4 that establishes critical habitat is a regulatory link between habitat protection and recovery goals, requiring the identification and protection of all lands, water and air necessary to recover endangered species. To determine what exactly is critical habitat, the needs of open space for individual and population growth, food, water, light or other nutritional requirements, breeding sites, seed germination and dispersal needs, and lack of disturbances are considered.

Answer this question, if possible (if impossible, reply "unanswerable"): What does critical habitat regulation require?
the identification and protection of all lands, water and air necessary to recover endangered species