5.) A ventilation system that channels more oxygen into different parts of the building when the level of carbon dioxide in the air rises.
We choose this because it is something new that we have seen. It is rarely heard of as oxygen is being produced if the carbon dioxide in the air rises. If such things were more common in this world, we think that the world will become a better place for us to live in. This can also provide more comfort to the visitors that visit the place. This type of system should be commonly use. Holy Innocent's High School should have such system, providing more comfort for those taking their exams. We, The Nubbies, strongly agree that this ventilation system should be use in everyday of our life. These are the reasons why we choose such green feature.