Reference reference reference reference!
THE most important thing to do when writing a report.. lol.
This is almost true - referenec PROPERLY! Look up a style guide. You can either google, look for something like this:
http://www.calstatela.edu/library/styleman.htm
As MM said, ask your teacher to check your report over. Maybe get someone else to read it as well.
Websites are genearlly not great references, look for .edu.au, .edu or .ac.uk (they all denote educational instutitions) or .org if you have to use websites. Do use things like the various 'Go Veg' guides - I know Vegan Outreach have one, AA make a one I think. If you google you should find some.
Either be specific (in which case, you are trying to cover too many points) or be general but make specific conclusions (which would be something along the lines of all exploitation is a negative thing because X.)