How can protecting biodiversity at a local level affect worldwide?
If you protect your local ecosystem it could have species that scientists need to study for medicinal purposes or to research lifespan or discover new species. Biodiversity helps protect food supplies to all animals, even in a large area.

How do habitat destruction and loss of species affect ore than one area?
Species in one area can be dependent off of species far away for food through the chain. When habitats and biodiversity are destroyed, illness can spread from organism to organism.

How does preserving biodiversity enhance the lives of people?
It enhances peoples lives by helping keep the economy alive and not having to spend time and money to restore it, ie cutting down forests and contaminating water would have to have people clean up when they could be moving forward. It also helps because medicine research for diseases come from some of the ecosystems. It also keeps fresh oxygen and water so we have a constant supply, and keeps the plants and animals we eat alive and healthy.


http://www.greenfacts.org/en/biodiversity/l-2/2-biodiversity-synthesis-report.htm#3