Science Class

Let´s learn how to recycle properly, but do you know why we have to recycle? Maybe these photos will help us clarify the ideas a bit ... All the garbage that we generate in our houses and that is not recycled, ends up affecting ourshelves. For that reason we find so many garbage remains in forests, rivers and seas, but we are not the only ones affected ... Many animals die by confusing pieces of plastic with food. Others are trapped in our waste.  That is why it is important that we pay attention and not behave like the protagonist of the following video: Why do we have to recycle ?. Here we have 9 reasons to do it: 1. Overexploitation of natural resources and air and water pollution are reduced. 2. A drop of used oil contaminates 1000 liters of water. 3. Recycling is one of the simplest activities in which we can participate directly. 4. For every ton of paper that is recycled, 18 trees are saved. 5. If we recycle we give the pl...

The Carbon Footprint   is defined as: The total amount of greenhouse gases produced to directly and indirectly support human activities, usually expressed in equivalent tons of carbon dioxide (CO2). In other words: For example, when you drive a car, the engine burns fuel which creates a certain amount of CO2, depending on its fuel consumption and the driving distance. (CO2 is the chemical symbol for carbon dioxide). When you heat your house with oil, gas or coal, then you also generate CO2. Even if you heat your house with electricity, the generation of the electrical power may also have emitted a certain amount of CO2. When you buy food and goods, the production of the food and goods also emitted some quantities of CO2. Your carbon footprint is the sum of all emissions of CO2 (carbon dioxide), which were induced by your activities in a given time frame.  Usually a carbon footprint is calculated for the time period of a year. Each of the following activitie...