Respuesta :
Answer:
Amphibians, the total threated species is 31,8%
Explanation:
The IUCN ( International Union for Conservation of Nature) is an environmental organization that helps and influences societies around the world to preserve biodiversity so that human progress, economic diversity and the conservation of nature can work together, to ensure that any natural resource usage is ecologically sustainable.
The IUCN created a list of threatened species. A threatened species is an organism that is vulnerable to lose all of its population shortly. The list was created to state and report the status of conservation of animals and plants. The IUCN studies species under several conditions and criteria to create a list of categories directed toward classifying animals and taking action when needed:
- Extinct (EX): the last individual of the species has died.
- Extinct in the wild (EW): the last individuals is known only to survive in captivity
- Critically endangered (CR): the species is in extremely high risk of extinction in the wild in the immediate future
- Endangered (EN): the species is in very high risk of extinction in the wild shortly.
- Vulnerable (VU): the species is a high risk of extinction in the wild in medium-term future
- Nearly Threatened (NT): the species is close to being at high risk of extinction soon
- Low Concern (LC): the species is unlikely to become extinct soon.
- Deficient Data (DD): Not enough information about the species to classify it.
- Not Evaluated (NE) : the species have not been evaluated yet
The definition of threatened according to the IUCN is a species that is classified in CR (Critically endangered) , EN (Endangered) , and VU (Vulnerable)
So according to this definition in the IUCN red list finder, you would have the following numbers:
a. Amphibians
- Total: 6771
- Threatened: CR: 575, EN:944; VU: 638
- Total threatened: 2157
- Percentage: 31,8%
b. Birds
- Total: 11133
- Threatened by category: CR: 225, EN: 469, VU: 799
- Total threatened: 1493
- Percentage: 13,4%
c. mammals
- Total: 5801
- Threatened by category: CR: 203, EN: 489, VU:528
- Total threatened: 1220
- Percentage: 21%
d. reptiles
- Total: 7541
- Threatened by category: CR: 303, EN: 547, VU: 517
- Total threatened: 1367
- Percentage: 18,1%
e. fishes
- Total: 18449
- Threatened by category: CR: 549, EN: 771, VU: 1174
- Total threatened: 2494
- Percentage: 13,5%
Answer: Amphibians, the total threated species is 31,8%