1.open https://troy.blackboard.com/webapps/login/ and click the trojan web express.
username: yzhao@troy.edu
password:Zyc19970416
2.find and click TROYONLINE Principles of Biology BIO-1100-XTIB 16/T2 (Grilliot)
3.find and click Pearson MasteringBiology
4.click Welcome to MasteringBiology and finish the Ch05 CH06
PLEAS finish the CH 05 on time
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