could someone please help me i have to write about the start of life on a extrasolar planet and talk about chemical evolution,,

Question

could someone please give me some pointers

Is this S103 ECA?

yes it is im just need some pointers so that i can do the work in my own words
but i don't know where or how to start it

Have you read the Block 12 materials?

Make a mind map (spray diagram) of the main points from the articles related to the question. There is a good description of how to do this in the Sciences Good Study Guide.

There should be all the information that you need in the B12 articles.