Global warming - A gradual & long-term warming of the planet's overall temperature, Greenhouse effect - A process that occurs when gases in Earth's atmosphere trap the Sun's heat, Forest fires / Bush fires - Any uncontrolled and non-prescribed combustion or burning of plants in a natural setting such as a forest, grassland, brush land or tundra, Deforestation - The clearing or thinning of forests by humans to make rooms for something beside forest, such as agricultural cropland or urbanization , Ozone depletion - The thinning of the ozone layer present in the upper atmosphere, Marine debris - Human-created waste that has deliberately or accidentally been released in a sea or ocean, Coral bleaching - Whitening of coral that results from the loss of a coral's symbiotic algae, usually caused by stressor such us the increase of ocean's temperature, Acid rain - Any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms, Land degradation - The deterioration or loss of the productive capacity of the soils for present and future because of human exploitation or natural cause,

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