Answer:
Habitat loss or change.
Explanation:
If an ecosystem is destroyed, or altered, the organisms in that specific area may struggle to survive, or have to relocate to a suitable habitat. When this happens it may result in a butterfly effect where species die or migrate away. The Species diversity will then decrease in that ecosystem.
Loss of habitat or geographical isolation has the greatest effect on species diversity in an area.
Habitat loss or change has direct negative impact on species diversity.
Due to change in habitat the natural habitat loses its capability to sustain native life in terms of resources, nutrition and reproduction.
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