NEETBotanyBiodiversity and its Conservation
Ecologists have observed that the current species extinction rates are estimated to be 100 to 1000 times faster than in the pre-human times. If these present trends continue, what grim warning have they issued regarding the near future?
Options
- ANearly half of all the species on Earth might be wiped out within the next 100 years.
- BAll species on Earth will inevitably be wiped out within the next 50 years.
- COne-fourth of all species might be wiped out within the next 1000 years.
- DOnly the endemic species of the tropical rainforests will be wiped out within the next 100 years.
Correct answer
A. Nearly half of all the species on Earth might be wiped out within the next 100 years.
Step-by-step solution
According to NCERT, the current species extinction rates are estimated to be 100 to 1000 times faster than in the pre-human times. Ecologists warn that if the present trends continue, nearly half of all the species on Earth might be wiped out within the next 100 years. The other options misstate the proportion of species or the timeframe predicted by ecologists. Answer: Nearly half of all the species on Earth might be wiped out within the next 100 years.