The factor that is associated most closely with biodiversity is species extinction. The correct option is B.
What is biodiversity?
Biodiversity is a term for diverse nature and factors present in nature. The diversity is inexplicable. The earth is a storehouse of biodiversity. There are more than millions of animal species and millions of plant species present.
Now, many factors affect biodiversity. They are pollution, increasing human population, loss of habitat, increasing farming, killing of animals, and destruction of forests.
Due to the destruction of habitat, and the killing of animals and forests, every year many species of animals and plants go extinct. Species extinction impacts biodiversity adversely.
Thus, the correct option is B. Species extinction.
To learn more about biodiversity, refer to the below link:
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