A pond may seem quiet and subdued, but this unique ecosystem is filled with active life cycles. Students learn what distinguishes a pond from other bodies of water, the plant and animal life within it, and how their life cycles contribute to the pond itself in this Spanish-translated title.
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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…
Edificar La Casa Blanca (building Up The White House) Learn about the White House while acting out the story of Charlie as he builds a treehouse that will be his own White House ! Charlie wants to become the president one day and, with the help of his friends, he learns about the White House and the presidents duties.…
