How many of the following are causes of biodi | vedclass

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(D) The causes of biodiversity loss are collectively known as the '$Evil Quartet$'.These four major causes are:$1$. Habitat loss and fragmentation: Th

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$4$

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(D) The causes of biodiversity loss are collectively known as the '$Evil Quartet$'.These four major causes are:$1$. Habitat loss and fragmentation: This is the most important cause driving animals and plants to extinction.$2$. Over-exploitation: Humans have over-exploited many species (e.g.,Steller's sea cow,passenger pigeon) for food or commercial needs.$3$. Alien species invasion: When alien species are introduced unintentionally or deliberately,some of them turn invasive and cause the decline or extinction of indigenous species.$4$. Co-extinction: When a species becomes extinct,the plant and animal species associated with it in an obligatory way also become extinct.Since all four listed factors $(a, b, c, d)$ are recognized causes of biodiversity loss,the correct answer is $4$.

How many of the following are causes of biodiversity losses $:-$
$(a)$ Habitat loss
$(b)$ Over-exploitation
$(c)$ Alien species invasion
$(d)$ Co-extinction

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How many of the following are causes of biodiversity losses $:-$$(a)$ Habitat loss$(b)$ Over-exploitation$(c)$ Alien species invasion$(d)$ Co-extinction