How YOU Can Help Because of human activity, the chemical make-up of our atmosphere is changing.
Carbon dioxide is a major contributor to the change .
Though there is no proven fact of these gases causing earth's atmosphere to change, it is a proven fact that earth's temperatures are rising. As the sun heats our planet, heat is radiated back up towards our atmosphere. Without this, no human life would be possible on earth. However, more and more greenhouse gases are in our atmosphere. Human activities, and combustion of fossil fuels are a major contributor to greenhouse gases.