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The term 'sixth mass extinction/sixth extinction' is often mentioned in the news in the context of the discussion of

(a) Widespread monoculture practices in agriculture and large-scale commercial farming with indiscriminate use of chemicals in many parts of the world that may result in the loss of good native ecosystems.
(b) Fears of a possible collision of a meteorite with the Earth in the near future in the manner it happened 65 million years ago that caused the mass extinction of many species including those of dinosaurs. .
(c) Large scale cultivation of genetically modified crops in many parts of the world and promoting their cultivation in other parts of the world which may cause the disappearance of good native crop plants and the loss of food biodiversity.
(d) Mankind's over-exploitation/misuse of natural resources, fragmentation/loss of natural habitats, destruction of ecosystems, pollution and global climate change.



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The term 'sixth mass extinction' refers to the ongoing extinction crisis that the Earth is currently experiencing, where a significant number of species are at risk of extinction. This extinction event is primarily attributed to various human activities and their impact on the environment. Factors such as overexploitation of natural resources, habitat destruction and fragmentation, pollution, and global climate change have led to the loss of biodiversity and the decline of many species.

While options (a), (b), and (c) address specific environmental issues, they do not encompass the broader scope of the sixth mass extinction. The sixth mass extinction is a global phenomenon driven by human-induced changes in ecosystems and the environment. Therefore, option (d) best captures the causes and implications of the sixth mass extinction.


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