Table 4.2 Maximum rates of photosynthesis of plants in various stages of succession dynamics,
and daily rates of photosynthesis in various
strata, of an Australian rainforest (Doley et al. 1988)
Maximum rates (|imol CO2 m 2 s 1)
Species of early stages of forest successions 15
Tree species of later stages of forest successions 4-15
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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.