Question

The greatest threat to organisms and biodiversity is}

• A. process of habitat loss
• B. species extinction all over the world
• C. reduced carrying capacity of the habitat
• D. biodiversity hot spots

Hint:

Habitat loss is the biggest threat to biodiversity—it triggers extinction and ecosystem imbalance.

Answer 1

The Correct Option is A

Concept: The greatest pressure on biodiversity arises when ecosystems are physically altered or fragmented, reducing the ability of species to survive and reproduce. Step 1:Identify the ecological mechanism.
When forests, wetlands, or grasslands are converted into agricultural land or urban spaces, the natural living environment of species is permanently altered, leading to ecological imbalance.
Step 2:Link cause with biodiversity decline.
The breakdown of continuous habitats into smaller isolated patches results in:

• Reduced breeding and feeding areas
• Increased human–wildlife conflict
• Long-term population decline of species

Step 3:Differentiate from related outcomes.

• Species extinction → Consequence of habitat disruption
• Reduced carrying capacity → Ecological effect after habitat changes
• Biodiversity hotspots → Regions of high species richness, not a threat factor