نتائج البحث

'''المنظومة البيئية''' أو '''النظام البيئي''' (Ecosystem) في [[علم البيئة]] هو أي مساحة طبيعية وما تح [[cy:Ecosystem]]

[[simple:Natural environment]]

...acteria and other microorganisms break down complex organic materials into simple, more stable substances. * biome A biological community or ecosystem characterized by a speci.c habitat and climate such as a tropical rain fore

...ce, organism, or energy form present in amounts that impair or threaten an ecosystem to the extent that its current or future uses are precluded. ...fered by Jaeger Products, Inc. polymerization A chemical reaction in which simple molecules combine to form