Threatened and endangered species


summary:
 
          The main reason for world changing rapidly  is human population explosions, greed, pollution and disease, which impact animal live. The extinction of species is nature process but human accelerated it. Animals under risk of disappearing are called threatened, which may be endangered or vulnerable. Without any protection, the animals could become extinct within 10-20 years is called endangered, which is formed from critically and simply endangered. Without any protection, the species extinct over a long period of time is called vulnerable.




Hong
21-09-2019