Light is a form of energy. On Earth, light from the Sun supplies energy to heat the planet and maintain temperatures. Earth’s surface heats unevenly because sunlight (solar radiation or light energy)

Let’s bring the issue of language, you are not going to bring more people in the sciences by try turning an African into an English person or into French people. So, the

Throughout human history, clays and clayey soils have been used for religious, artistic, cosmetic and therapeutic purposes. For example, the utilization of ochre, a clay stained by iron oxides, dates back to the