Fig. 3.29A,B Daily course of soil temperature at 2 cm depth (A) and air temperature 1.5 m above the floor (B) in a forest in Surinam. Comparisons between the closed forest and clearings are made for the hot and dry season. (After Jacobs 1988)
Fig. 3.30 Daily course of water-vapour pressure saturation deficit of the atmosphere at different strata of a forest in Surinam during the dry season; i.e. above the canopy and at increasingly lower levels inside the forest as indicated. (After Jacobs 1988)
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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.