Biodiversity Online Quiz

Endemism refers to species being unique to a defined geographic location. Islands provide geographic isolation, which prevents gene flow with mainland populations and allows unique evolutionary paths to occur over time, leading to many endemic species.

Industrial agriculture involves large-scale land clearing (deforestation), monoculture farming, and heavy pesticide use, all of which destroy diverse natural habitats and significantly threaten global biodiversity. Natural processes like predation and evolution actually support or maintain biodiversity.

Species with small populations lack genetic diversity and are extremely sensitive to environmental fluctuations or stochastic events, making them highly vulnerable to extinction. Conversely, widespread species with high reproductive rates recover much more easily.

Speciation is an ongoing natural process, and new species continue to evolve across the globe as populations adapt to different environments and become reproductively isolated. Evolution does not make species "genetically superior," nor does it guarantee they won't go extinct.

Extinction is a natural, ongoing evolutionary process known as background extinction, which occurs continuously throughout Earth's history. It does not happen at a perfectly constant rate, nor is it limited only to mass extinction events.

Biodiversity refers to the variety of all living organisms within an ecosystem, including plants, animals, fungi, and microorganisms. It does not include nonliving (abiotic) components, which are part of the ecosystem but not its biodiversity.

By definition, to qualify as a biodiversity hotspot, a region must have lost at least 70% of its original natural vegetation, meaning it retains less than 30%. This severe habitat loss highlights their threatened status.

While biodiversity can be measured at genetic and ecosystem levels, its most common definition and measure is the variety of different species within an ecosystem.