2 Des modèles sont disponibles.
FILTRE
Personnalisation facile Diapositives PowerPoint 100% entièrement modifiables Rapide et facile à personnaliser
When you look at the stars and the galaxy, you feel that you are not just from any particular piece of land, but from the solar system. - kalpana Chawla Solar power is the last energy resource that isn't owned yet , nobody taxes the sun yet. - Bonnie Raitt The total amount of energy we use every year , from coal, oil, natural gas, hydro, nuclear, and everything else , is dwarfed by the amount of solar energy hitting the planet each year. - Ramez Naam
1/1 page
