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Deforestation one of the largest issues in global land use. Estimates of deforestation usually focus on the forest area for farming, grazing, and getting wood. When all trees are from an area, it destroys the forest completely. But sometimes, even cutting down some trees or accidental fires can significantly the forest's structure.

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Tropical on Earth are like a special storehouse of living things. They have many old and unique plant and animal , and they show an amazing variety of life and natural connections. While it covers just 2 percent of Earth's surface, the dense vegetation of these forests plays an important role the health of our planet. Unfortunately, thousands and thousands acres of the world's rainforests are destroyed each day, as trees are cut for wood and land is cleared for agriculture.

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Shark finning is the of a shark's lateral, dorsal, and lower tail fins, which is often followed by the shark alive back into the ocean, where it later dies. In the early 21st century the public began to learn how the commercial fishing industry contributed to the spread and the scale of shark finning and also to the systematic decline of shark worldwide. Since many shark species function as apex in marine ecosystems and thus heavily influence the overall health of their , it has become important to monitor how global shark populations are faring.

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A disruption in the food chain, like overfishing, can have far-reaching effects on the ecosystem.