1. How do the earth systems affect each other? Every single Earth System affects each other because they all rely on each other to be successful. For example, if the atmosphere becomes overly contaminated the biosphere and hydrosphere will also become contaminated and all forms of life on those earth systems will become tainted and can eventually die. 2. How can an understanding of environmental science aid in handling natural disasters? If you have a high understanding of environmental science you can have a better understanding of how natural disasters affect the environment that was damaged and how humans can rebuild after the destruction and even make an inhabitable environment stable for living. 3. What efforts can we make to create a sustainable future? We need to decrease the production of plastic. Tons of plastic ends up in the ocean and is hurting sea animals. For example, plastic straws are killing sea turtles and other marine life. If we can decrease the production of plastic we can save an already decreased population of sea turtles and other marine life.