biology help..!please answer me these questions..?

Mona

New member
well i know the answers but i want some good answers to make notes..here are the questions..if u dnt know ne answer leave it and answer others.!

1)Why are living organisms classified?
2)Write short note on binomial nomenclature?
3)define taxon.
4)what is a key?
5)Why are classification systems changing every now and then?
6)define
a)phylum
b)class
c)Family
d)Order
e)Genus
7)How is a key helpful in the identification and classification of an organism.?

please give some good points and also dont forget to mention no.
-thnx-
 
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