Question

Explain the importance of maintaining biodiversity in the world.

Answer 1

"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
Healthy ecosystems can better withstand and recover from a variety of disasters.
And so, while we dominate this planet, we still need to preserve the diversity in wildlife."
http://www.globalissues.org/article/170/why-is-biodiversity-important-who-cares#WhyisBiodiversityImportant

"Biodiversity is essential to sustaining the living networks and systems that provide us all with health, food, wealth, fuel and the vital services our lives depend on.
These organisms, ecosystems and ecological processes supply us with oxygen and clean water. They help keep our lives in balance and regulate the climate. Yet this rich diversity is being lost at a greatly accelerated rate because of human activities.
CSIRO research shows that by 2070, the impacts of climate change on Australia's biodiversity will be widespread and extreme. We need to take action now to preserve this irreplaceable natural wealth and reduce biodiversity loss."
http://www.carbonneutral.com.au/about-us/biodiversity.html

Answer 2

I hope that his helps. :)