how many species arein there in the world?

Question: how many species arein there in the world?
- Keywords:
  species
Asked by _Game_Name_938:) to Gavin, Karen, Mark, Michel, Roisin on 14 Nov 2016.
- Mark Kennedy answered on 14 Nov 2016:
  
  There have been about 1.6 million confirmed species discovered on Earth.
  
  But a study released these year suggested there might be 1 trillion on Earth, meaning we’ve only discovered less than 1% of the species on Earth!!
  
  Source: (https://www.nsf.gov/news/news_summ.jsp?cntn_id=138446
- Michel Destrade answered on 16 Nov 2016:
  
  yes, nobody knows for sure! Still lots of work to be done by scientists!

Question: how many species arein there in the world?