The article deals with the scientific and methodological support of the organization of the process of studying Russian and world environmental situations. It is based on the implementation of co-evolution and sustainable development ideas. The concept of "environmental situation". presents an analysis of the scientific approach to the rating of environmental situations. https://www.bekindtopets.com/flash-pick-Ovation-Toddler-Metallic-Schooler-Helmet-XXSmall-XSmall-hot-choice/