Biologists most often define biodiversity as the "totality of genes, species and ecosystems of a region". An advantage of t… 展开

According to Mora and her colleagues' estimation, there are approximately 8.7 million terrestrial species and 2.2 million oceanic species. The authors note that these estimates are strongest for eukaryotic organisms and li… 展开

During the last century, decreases in biodiversity have been increasingly observed. It was estimated in 2007 that up to 30% of all species will be extinct by 2050. Of these, about one eighth of known plant species ar… 展开