Participa de Nuestro Foro
Sé una solución a la pregunta de otro
Nick:
Titulo:
Responder:
Digite el texto de la imagen:

Taylor pregunto:
I enjoy travelling <a href=" http://jillianreilly.com/valedictorian-essay/#acquisition ">an essay</a> The so-called hydrofluorocarbons, or HFCs, came into widecommercial use to replace ozone-depleting chemicals that arebeing phased out under the 1987 Montreal Protocol. They make uproughly 2 percent of global greenhouse gas emissions, but use ofthe chemicals is rising at a rate of up to 9 percent a year.