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…
Usar El Aire This book answers the questions: What is air? What is air made of? How do we know air is all around us? How do we use air? Can we run out of air? How do we clean air? Who studies air? It also includes an activity about air.
