Porque hay tantas alergias en primavera? Porque las flores tienen color? Preguntas faciles y respuesta no tan faciles, te ayudamos a descubrir con ciencia y palabras sencillas. 
 
Why are there so many alergies during spring? Why the flowers have colors? Easy questions with difficult answers unless you know from science and are able to explain it in simple words, this book will help with that.