ECOLOGY
BIODIVERSITY AND ITS CONSERVATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Insects
|
|
|
Mammals
|
|
|
Amphibians
|
|
|
Reptiles
|
Detailed explanation-1: -Answer: (c) Amphibians have the highest percentage presently, 32% of all amphibian species in the world face the threat of extinction. Other than these, 23% of all mammal species and 12% of all bird species also facing the risk.
Detailed explanation-2: -Complete answer: Mammals have the highest that is, 177 endangered species among vertebrates which represents 3.8% of all the species.
Detailed explanation-3: -As of September 2021, the International Union for Conservation of Nature (IUCN) lists 1085 endangered amphibian species. 14% of all evaluated amphibian species are listed as endangered.
Detailed explanation-4: -Habitat destruction, non-native species (predatory fish, bullfrogs, fungus, pathogens), climate change (alters temperature and water levels), pollution and diseases (especially chytridiomycosis, caused from the chytrid fungus) all have been shown to contribute to worldwide amphibian declines.