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Products from Organisms, Biological Systems and Processes.
Member rating: No Rating | Words: | Submitted: Thu Oct 23 2003
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Products from Organisms, Biological Systems and Processes Products from Plants Plants are essential to life on earth because they capture light energy and convert it into a form - chemical energy - usable by all organisms. Taking the simple molecules carbon dioxide and water, they convert these into a wide range of energy-rich organic substances to serve their needs but which also fulfil the needs of other organisms. All organisms are made up of the same basic biochemicals, so plants are a ready source of these staple foods - carbohydrates, proteins and fats, along with other essential nutrients such as vitamins and minerals. Of the plant species named to date (over 270 000), about 80 000 plants are known to be edible but only around thirty of these are grown as crop plants - wheat, rice, maize and potatoes provide more of the world's food than all other crops combined. As well as these...
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