My name is Shalom Mulungi. I am writing about the topic for my class’ exposition. On that day, it was good. My class had to make solar panels, solar dryers, solar water heaters, solar heaters and free electricity. They were all fun but the solar heater was the best because the solar heater is used for the following resource; it is used for cooking for example; rice, water and many others. The solar dryer is only used for drying farmer’s crops while the solar water heater warms water and free electricity is used for the following things; watching T.V and charging batteries of telephones.