1. How do earth systems affect each other? The earth has various systems like the biosphere, geosphere, atmosphere, cryosphere, hydrosphere. All of these systems interact with each other to cause different effects on earth like climate and geography. Earthquakes fall under the geosphere and in some cases affect the hydrosphere when they cause Tsunamis. 2. How can an understanding of environmental science aid in handling natural disasters? Understanding of environmental science can aid in the handling of naturals disasters because it would allow us to understand why these disasters are happening, and what we can do to prevent them. 3. What efforts can we make to create a sustainable future? In order to create a sustainable future we must; - Recycle more - Stop using plastic - Use biodegradable materials