Question

Which of the following is not a cause of biodiversity loss?

• A. Fragmentation
• B. Over-exploitation
• C. Co-evolution
• D. Alien species invasion

Answer 1

The Correct Option is C

The presented question asks which option is not a cause of biodiversity loss. To solve this, one must first understand the causes of biodiversity loss:

• Fragmentation: This is indeed a cause of biodiversity loss. It occurs when large habitats are broken into smaller, isolated areas, leading to species isolation and decline. 
• Over-exploitation: This involves the excessive use of species and resources, which can decrease populations and lead to extinction.
• Alien species invasion: These are non-native species introduced to an ecosystem, often outcompeting or preying on native species, which can significantly harm biodiversity.
• Co-evolution: Unlike the others, co-evolution is not a cause of biodiversity loss. It refers to the mutual evolutionary influence between two species that interact closely, often leading to beneficial adaptations for both.

Given these explanations, the correct answer is Co-evolution, as it is a natural process that typically enhances diversity rather than causing its loss.

Answer 2

Co-evolution, where species mutually adapt over time, does not lead to biodiversity loss. Fragmentation, over-exploitation, and alien species invasion are significant causes of biodiversity loss due to habitat destruction, resource depletion, and ecosystem disruption.