What are the assorted stytles surrounded by bonsai? ...

Selecting sheets?
Answers:    have a look at these

http://www.bonsai-tree.22web.net/styles....

http://www.brusselsbonsai.com/BonsaiStyl...

http://www.canadiancountrywoman.com/gard...

http://www.bonsaisite.com/techniq1.html
How can we remove the odor of gas...
There are going on for 7 main styles, afterwards lots of variations from them. You are generosity to view the a mixture of styles on my site:
http://www.american-bonsai.com , and you'll also want to read the Bonsai Care page.