What is the single greatest threat to biodiversity? a....

What is the single greatest threat to biodiversity?
a. over-harvesting of commercially important species
b. habitat alteration, fragmentation, and destruction
c. introduced species that compete with native species
d. pollution of Earth's air, water, and soil

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Key Concepts

Biodiversity

Biodiversity refers to the variety of life on Earth, encompassing the genetic, species, and ecosystem levels. It is crucial for maintaining ecosystem resilience, supporting ecosystem services, and sustaining the natural processes that regulate the environment. High biodiversity ensures natural sustainability for all life forms and provides resources such as food, medicine, and raw materials, making it a central concept in conservation biology.

Habitat Alteration, Fragmentation, and Destruction

Habitat alteration, fragmentation, and destruction involve the modification or complete removal of natural environments, which directly leads to a decline in suitable living conditions for many species. This key concept highlights how changes in land use, urban development, deforestation, and agricultural expansion can break up contiguous habitats, isolate populations, and ultimately cause a severe reduction in the biodiversity of an area. It is widely recognized as one of the most significant threats to global biodiversity because it disrupts ecosystem integrity and the natural relationships between species.

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