20 40 60 80 100
Fig. 5.2 Relation of drought resistance to lethal leaf water potential in wilted leaves. Low and high lethal leaf water potential are related to low and high mortality, respectively (Figure by courtesy of B. Engelbrecht and T.A. Kursar; for details see Tyree et al. 2003)
Was this article helpful?
Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.