Since Jiskha does not have a regular biology tutor, you might try this site.
http://biology-forums.com/index.php
If there is a tutor here who can help you with this particular question, I'm sure he/she will add a response.
~~~~~~~~~~~~~~~~
A very good way to search is to go to Google's advanced search page http://www.google.com/advanced_search?hl=en and put my search words or phrases into the first or second search box (either "all the words" or "exact phrase"). Another is to start out at http://scholar.google.com. However, there many other strategies for searching you can use, and at http://hanlib.sou.edu/searchtools/ the HOW TO SEARCH THE INTERNET section will help you best.
How are soldier crabs useful to us and what things are humans doing to wipe them out?
2 answers
we can extract some essential amino acids and fatty acids for medicinal purposes