Biodiversity boosts ecosystem productivity where each species, no matter how small, all have an important role to play. For example, a larger number of plant species means a greater variety of crops; greater species diversity ensures natural sustainability for all life forms; and healthy ecosystems can better withstand and recover from a variety of disasters. This update includes additional illustrations and notes on these aspects, including an illustration of the nitrogen cycle and updates on the declining bee population and their importance to agriculture.

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