how did native americans adapt to their environments
This question is FAR too broad. There were many, many groups of people (and therefore civilizations) that developed in what we now call North America.
You'll need to decide on one or two groups to concentrate on or narrow down the question.
what kind of civilization did meso america develop
You cannot say "civilization" (singular). There were many, many groups of people.
Learn to conduct searches, and you'll find lots of answers. For example, I entered ancient meso america at http://www.google.com and here are the results:
http://www.google.com/search?q=ancient+meso+america&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7
Try different search terms for each of your questions.
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