lunes, 1 de diciembre de 2014

3RD SYSTEMS- SCIENCES B:

HOMEWORK

INVESTIGATE ON THESE TOPICS, PREPARE SLIDES WITH IMAGES AND PRESENT IN A FOLDER. I WILL EVALUATE ORALLY . (WEDNESDAY, DECEMBER 3RD) 

 http://www.nrdc.org/issues/  

 student book (pages 79-81-82)

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