Presents environmental experiments and activities that will help children and adults be aware of the importance of taking care of the earth by confronting problems like air and water pollution, noise pollution, the extinction of animal and plant life and the misuse of energy.
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Desarrollo Y Aplicacion De Un Indice De Calidad De… This investigation presents the development of a water quality index (WQI) for the rivers in Puerto Rico. This index intent to classify the water quality in a scale from 0 to 100 according to the evaluate constituent and this allow to classify the water according to its state, good, moderate,…
¡pop! Presión Del Aire Y Del Agua (pop! Air And… What does swimming in a pool, drinking through a straw, breathing in air, and circulating blood all have in common? They all require a form of air or water pressure! Readers will discover the variety of ways that air and water pressure make an impact on our lives and the…
¡pop! Presión Del Aire Y Del Agua (pop! Air And… What does swimming in a pool, drinking through a straw, breathing in air, and circulating blood all have in common? They all require a form of air or water pressure! Readers will discover the variety of ways that air and water pressure make an impact on our lives and the…
En Algún Lugar...entre Las Inspiraciones De La Vida Somewhere within the nispirations of life... is a book, written with great emotion, which pretends to retake the sense of giving instead of taking love and affection. The book show us how we forget the childish approach of enjoying the simplest affection, care, and love to those who make our…
