Answer :
A decline in biodiversity often leads to increased transmission of infectious diseases as diversity in plants and animals may serve a significant role for humans.
If biodiversity decreases, transmission of infectious diseases events rise due to an increase in encounter rates among infected and between infected and susceptible hosts. Declining biodiversity reduces an ecosystem's productivity (the quantity of energy transformed into biomass) and the quality of its services (which almost always include preserving the soil, purifying the water that runs through it, and providing food and shade, among other things).
All elements of human well-being rely on ecosystem products and services, which rely on biodiversity. Biodiversity loss can impair ecosystems, encourage infectious disease outbreaks, and jeopardize development progress, nutrition security, and disaster preparedness.
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