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Major environmental issues in DRC include deforestation, poaching, which threatens wildlife populations, water pollution and mining. A dense tropical rainforest in the DRC's central river basin and eastern highlands is bordered on the east by the Albertine Rift (the western branch of Africa's Great Rift System). It includes several of Africa's ...
Water pollution also reduces the ecosystem services such as drinking water provided by the water resource. Sources of water pollution are either point sources or non-point sources. [156] Point sources have one identifiable cause, such as a storm drain, a wastewater treatment plant, or an oil spill. Non-point sources are more diffuse.
Animal agriculture worldwide encompasses 83% of farmland (but only accounts for 18% of the global calorie intake), and the direct consumption of animals as well as over-harvesting them is causing environmental degradation through habitat alteration, biodiversity loss, climate change, pollution, and trophic interactions. [174]
Jungle burned for agriculture in southern Mexico. Tropical rainforests have received most of the attention concerning the destruction of habitat. From the approximately 16 million square kilometers of tropical rainforest habitat that originally existed worldwide, less than 9 million square kilometers remain today. [7]
Biodiversity loss has bad effects on the functioning of ecosystems. This in turn affects humans, [ 45 ] because affected ecosystems can no longer provide the same quality of ecosystem services , such as crop pollination , cleaning air and water, decomposing waste, and providing forest products as well as areas for recreation and tourism .
Species have a hard time finding a new place to settle in these fragments causing ecological collapse. This leads to extinction of many animals in the rainforest. A classic pattern of forest fragmentation is occurring in many rainforests including those of the Amazon, specifically a 'fishbone' pattern formed by the development of roads into the ...
One of the world's largest and most dense rainforests is the Amazon rainforest in South America. Rainforests are disappearing across the world, and at an alarming rate in Brazil. Since the 1980s, more than 153,000 square miles of Amazonian rainforest has fallen victim to deforestation. [6]
The danger of overexploitation is that if too many of a species offspring are taken, then the species may not recover. [12] For example, overfishing of top marine predatory fish like tuna and salmon over the past century has led to a decline in fish sizes as well as fish numbers. [4] Confiscated animal pelts from the illegal wildlife trade.