The growth of a plant is possible because of the basic rule that one leaf is able to produce two or more leaves. A seed while in the process of germination emerges with one or two leaves, these leaves give raise to two or more leaves. This process expands from a sapling stage to a fully grown tree. The leaf takes energy from the sun. Human creations cannot match the nature. The total energy from a solar photo-voltaic (PV) panel will not be able meet the energy requirements to produce two or more solar PV panels. There fore they are not sustainable as much as any plant. The solar PV panel is a manifestation of energy spent from other sources renewable / non-renewable. The direct solar energy and the energy from biomass are the two main sources of energy which would sustain life on this earth in the future.
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