● Land reclamation is the process of creating new land from the ocean, riverbeds, or lake beds. ◦ The process of reconverting disturbed land to its former or other productive uses. Hence statement 1 is a method of land conservation. ● Relying more on irrigation (rather than rainfed water) can cause siltation, waterlogging, and reduced levels of groundwater. Hence it is not amethod of land conservation. ● Overgrazing can cause land degradation and desertification. Hence statement 3 is about land conservation. ● Excessive use of chemical fertilizers can also cause land degradation. Hence statement 4 is about land conservation.