Which of the following is NOT considered a method of conservation of natural resources?

* Extraction refers to the process of removing or taking out natural resources from the earth (such as mining minerals, drilling for oil, or harvesting timber). It leads to depletion rather than conservation.
Afforestation (planting trees), Recycling (reusing materials to reduce fresh resource consumption), and Terrace farming (a soil conservation method on hilly terrains) are all proactive practices aimed at conserving natural resources.