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anthropogenicextinction-190809015258 (2).pdf

  1. Human activities are also responsible for the decline of biodiversity, including the extinction of species. Increased human population, destruction or fragmentation of habitats, pollution, and climate change or global warming are just some of the human-influenced factors that play significant roles in the decline of biodiversity.
  2. Overhunting, introducing foreign species that compete with native species and removing natural predators also have negative effects on biodiversity.
  3. 1. Habitat Destruction In the Philippines, deforestation is a leading cause of habitat destruction. Remember that rainforests serve as home to countless animals and plants. Habitat destruction negatively impacts biodiversity on an exponential scale.
  4. 2. Bottom trawling or dragging This is a fishing method in which a boat drags a net along the ocean bottom, scooping up sea life but also damaging the structure of the marine community. Banning this method can give “breathing space” to our seas; it can also allow many marine species to recover.
  5. 3. Pesticide Pollution Dichlorodiphenyltichloroethane (DDT) is used to kill insects. It is sprayed on bodies of water to kill mosquito larvae. Some predatory birds such as hawks and eagles become weak when they have high levels of concentrated pesticides in their bodies.
  6. A. Extinct (EX) – This category means that there is no reasonable doubt that the last individual has died. B. Extinct in the Wild (EW) – This category means that the species survive in cultivation, in captivity, or as a naturalized population (or population) well outside the past range.
  7. C. Near Threatened (NT) – The species does not qualify for Critically Endangered (CR), Endangered (EN), or Vulnerable (VU) as of now, but is close to qualifying for, or is likely to qualify for, a threatened category in the near future.
  8. D. Least Concern (LC) – The species does not qualify for Critically Endangered (CR), Endangered (EN), Vulnerable (VU), or Near Threatened (NT) categories. Widespread and abundant taxa are included in this category.
  9. E. Data Deficient (DD) – there is inadequate information to make a direct or indirect assessment of its risk extinction based on its distribution and/or population status. A taxon in this category may be well studied, and its biology well known, but appropriate data onabundance and/or distribution are lacking. Therefore, DD is not category of threat.