1. How do the earth systems affect each other? Each of the earth systems interact with each other at all times. The earth systems affect each other so much that a change in one sphere will more than likely results in a change in one or more of the other earth systems. They work together to determine the climate and affect life on earth 2. How can an understanding of environmental science aid in handling natural disasters? An understanding of environmental science can help in handling natural disasters because we actually have background knowledge on these disasters and we know what to do in the case of a natural disaster. Although we are not able to stop almost all of the natural disasters, we are able to slow them down or reduce the damage 3. What efforts can we make to create a sustainable future? Some efforts that we can make to create a sustainable future is recycle, reduce water waste, join different groups that help clean up the community, and more!