2006-12-13 23:13:34 · 5 answers · asked by michellegrassick36 1 in Environment
I have checked - over 8000 species of trees.
10% are endangered species.
http://www.globaltrees.org/default.asp
2006-12-13 23:21:17 · answer #1 · answered by monkeymanelvis 7 · 0⤊ 0⤋
We simpoly do not know, each day one is lost as more and more are cleared from the rain forests. I have pasted a link to the Tree Conservation Information Service who estimate around 100,000 - but It is not yet possible to give a precise figure because definitions of the term "tree" vary as do species concepts. One definition of "tree" which is commonly followed in temperate regions is a woody plant growing on a single stem usually to a height of over two metres. This definition has been adopted by the IUCN/SSC Temperate Broadleaved Tree Specialist Group. The Group recently compiled a list of temperate woody plant genera and estimated the number of tree species within these genera - about 21,000 species (Hunt, 1996).
2006-12-13 23:22:40 · answer #2 · answered by DAVID C 6 · 0⤊ 0⤋
356
2006-12-13 23:15:18 · answer #3 · answered by IBRAHIM 2 · 0⤊ 0⤋
Two species, those with leaves and those without.
2006-12-13 23:28:42 · answer #4 · answered by Bertus S 1 · 0⤊ 0⤋
More than you can shake a stick at.
2006-12-13 23:23:33 · answer #5 · answered by ♣ My Brainhurts ♣ 5 · 0⤊ 0⤋