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Identify that cellulose contains the basic carbon-chain structures needed to build petrochemicals and discuss its potential as a raw material. Its just the discuss as raw material part that im not sure on......

I need help with: 'the importance of DNA in inheritance' - Does anyone know decent sites for this as well?? thanks.

"Explain the relationship between the shape of leaves, the distribution of tissues in them and their role" ????

Need help with this syllabus dot point. ASAP. Identify some examples that demonstrate the structural and functional relationships between cells, tissues, organs and organ systems in multicellular organisms