Find the incorrect statement. (a) 'Sixth extinction' is...

Name: Problem 48, Chapter 15: Objective Biology for NEET
Uploaded: 2021-11-11T11:50:45-08:00
Duration: 1 min 2 s
Channel: Hast Aggarwal
Description: Find the incorrect statement. (a) 'Sixth extinction' is different from previous extinction in terms of rate of extinction. (b) Ecologist warn that if the present trend of extinction continues, nearly 50 per cent all species on earth might be wiped out within the next 100 years. (c) Amphibians appear to be vulnerable to extinction. (d) Recent extinction is completely natural.

Find the incorrect statement. (a) 'Sixth extinction' is different from previous extinction in terms of rate of extinction. (b) Ecologist warn that if the present trend of extinction continues, nearly 50 per cent all species on earth might be wiped out within the next 100 years. (c) Amphibians appear to be vulnerable to extinction. (d) Recent extinction is completely natural.

Find the incorrect statement.
(a) 'Sixth extinction' is different from previous extinction in terms of rate of extinction.
(b) Ecologist warn that if the present trend of extinction continues, nearly 50 per cent all species on earth might be wiped out within the next 100 years.
(c) Amphibians appear to be vulnerable to extinction.
(d) Recent extinction is completely natural.

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Key Concepts

Mass Extinction

Mass extinctions are events in which large numbers of species go extinct across a wide range of habitats in a relatively short geological time span. The concept includes both past natural events, such as those caused by volcanic eruptions or asteroid impacts, and the modern 'sixth extinction,' which is distinguished by its rapid pace largely due to human impacts.

Anthropogenic Impact on Biodiversity

Anthropogenic impact refers to the influence of human activities on ecosystems, which often accelerates the rate of species extinction beyond natural background levels. This is a crucial concept in understanding the current biodiversity crisis, as the modern extinction event is driven by habitat destruction, pollution, climate change, and overexploitation, rather than by natural causes alone.

Rate of Extinction

The rate of extinction is a key measure in ecology that compares how quickly species are disappearing from Earth. Historically, extinction occurred at a slow natural background rate; however, current rates, especially during the purported sixth extinction, are significantly higher, largely due to human activities. This accelerated rate is what differentiates the modern extinction event from previous ones.

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