This list is intended to draw world attention to the factors that threaten the characteristics of properties which are inscribed on the list.

UNESCO: World Heritage in Danger in Brazil | United Nations Educational, Scientific and Cultural Organization

Taking into account the dependence of the properties of plants on climate and on other geographical characteristics, the complementariness among countries in the region, between them and other regions, may be exploited usefully.

UNESCO: SEE PhytoChemNet - Southeast European Network on Phytochemistry and Chemistry of Natural Products for Green and Sustainable Growth | United Nations Educational, Scientific and Cultural Organization

Even so, in a given plastic, there may be differences in ingredients, visual defects, or impurities that make it difficult to achieve the same molding characteristics, colors, strength and other properties as conventional plastics.

ENGADGET: Fujitsu making laptops from unwanted CDs and DVDs