How many organisms have been identified by biologists?

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Biologists have identified approximately 1.4 million named species, with estimates suggesting the total number of species could range from 2 million to as high as 100 million. The United Nations Environment Programme estimates around 1.75 million species, while other studies cite figures of 1.5 million and 1.7 million. A significant challenge in determining the total number of species is the lack of comprehensive information, particularly regarding bacteria, with estimates indicating that 99% remain unidentified. The discussion highlights the variability in species estimates and the ongoing debate within the scientific community.
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Aprox. how many organisms have been identified by biologists?
 
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*removes his answer in the interest of fair play*
 
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I found a website saying 1.4 million species have been named. However, since it's not my field, this is nothing but a website claim. And someone else has already answered.
 
1.4 million have been name
best estimate is 10 million
The estimate are 2 to 100 million

it is hard to evaluated the number of species due to the lack of information. It is though that 99% of bacteria have not been identify!

http://www.wri.org/wri/biodiv/b02-gbs.html
 
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2- Flora and fauna
 
1.7 million species
 
I realize this is a question that could yield a few answers, but Matt has correctly matched the answer I have which is 1.5 Million.

Matt receives 1 point! Next question will be posted tomorrow.
 
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