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Biodiversity is the interactions of life in an ecosystem.
The tropical rain forests are some of the most bio-diverse ecosystems on earth!
If there wasn't biodiversity the food web would fall apart and organisms would not have any food which would cause mass extinction.
Farmers don't want biodiversity in their farms because weeds or pesky animals can ruin their crops. So they use pestacides.
That is why we need biodiversity!!
Some organisms may lose their food and their would be much competition and they may go extinct.
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