Question

what is classification?
and what is an evolutionary tree?

Answer 1

1 is how organisms are ordered and 2 is like where they r placed in their family according to time i think

Answer 2

As a whole, I would say that classification is grouping the organisms in particular groups or sub-groups having common traits. You may check the following link for more details: http://www.britannica.com/EBchecked/topic/584695/taxonomy

As far as the evolutionary tree is concerned, it is the patterns of lineage branching which results from the evolutionary history of a particular organism.