En este mes, nuestro Perú cumple 199 años de independencia, estamos a un año del bicentenario, por ello es muy importante refl exionar, tomar acción y comprometernos con el Perú. Una forma es asumiendo nuestras responsabilidades frente al efecto invernadero.

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Material safety data sheetswhen working with any type of chemical the should be posted in a conspicuous place in the work areamsdsif a material does pose a health hazard teachers shouldobserve appropriate precautions when they or their students handle the materialmsds are available fromproduct manufacturesmsds sheets must beavailable in shop/science classes at all times