lunes, 2 de diciembre de 2013
martes, 26 de noviembre de 2013
the water and its importance: lucho's speech
yesterday, we had an exelent talk about the descomposition, contamination and care of owr most preciated resource, the water.
also we need to remember the water had been the minimum resource to live during more than 1600 years.
lunes, 30 de septiembre de 2013
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