Ini linknya ya-->http://www.mediafire.com/download/u4g95e0hhiejvsm/sistem-ekskresi-pada-manusia.rar
Semoga berguna...
Semoga berguna...
Biology Zone
Move buddy! Let's dance! Let your muscles working for you. They make form of your body, keep you stand, and support you until the very end. Believe it!
Yes. Your lungs are breathing. It's your heart beating. Your blood stream, either the red one or the white one, just keep eye on them!
Small unseen things may harm you everywhere everytime! Don't lose any eye on them! Keep learn and stay out of their territory!
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