A fifth of animals without backbones could be at risk of extinction, say scientists.
Almost 80% of the world's species are invertebrates, meaning they lack a spinal column.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/spineless-animals-under-threat-extinction
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/bbc-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/extinct-species
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-resources
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/global-warming
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystems
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/marine-life
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/insects
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forests
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fisheries
[16] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodiversity