Bio plastics are being developed from biomass sources. That would be things like sugar, vegetable oils or other stuff that does not require using fossil fuels.
Bio plastics are green because they are environment friendly. They are a better solution to making plastics, than using loads of oil and fossil fuels.
There was a reaction mentioned called polymerization. Under polymerization, there was also the condensation reaction and the addition reaction.
The different elements that were mentioned in the video, was Oxygen, Hydrogen and Carbon.
The connection between this video and the one about water, was that a lot of facts that we don't know about are told about in both videos.
As i said on Leda's blog, I agree with what you said about this kind of plastic being "green" but only to a certain extent. The final product is eco friendly but the process is most certainly not. The process of growing the crops involves many gases and pollutants that are bad for the environment. There is something behind the eco friendly concept.
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