What examples of ecosystems that have high biodiversity and low biodiversity?
Equator and polar regions, respectively.
The equator has highest levels of biodiversity. It is due high ran fall and temperature suitable for livings. We know at 25-35 degree celcius enzymes work in effective manner and leads to survival of sufficient numbers of organisms.
At the polar regions, low biodiversity is found. It is due to low temperature. The temperature fall below the zero degree. So, it leads to low biodiversity.
On the whole we can say that the biodiversity decreases from the equator to the poles, while the reverse situation is found from the polar regions to the equator.