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This article is intended to outline the environmental crisis worldwide, the degradation of biodiversity in Mexican territory, and the degradation of the crossroads sparks reserve. For the first two levels, we performed a documentary review, in order to explain the causes of this, which manifests itself in the loss of forests, global warming, and pollution of air, soil, rivers, seas and lakes. The first attempts to try to solve this environmental crisis worldwide, conducted UN organizing international summits from 1972, 1992, 1997 and 2002. Although during this period, also the model of sustainable development, environmental economics and ecological economics, however unfortunately the degradation of ecosystems continues to grow. As for the crossroads, the problem addressed documentary and empirically, resulting in that the causes that they degrade the mangroves, wetlands and pollute water bodies, killing birds, mammals and fish, as well as the generation of diseases in Some people living on the coast; they are the lack of sustainability of activities agricultural, livestock, mining and industrial, fire, the siltation of the estuaries, the low efficiency of environmental policies, and the lack of environmental awareness of the social and political actors.

REFLEXIONES Y PROPUESTAS DE SOLUCI?N SOBRE LA CRISIS AMBIENTAL: EL CASO DE LA ENCRUCIJADA, CHIAPAS