1. How do earth systems affect each other? In a natural example, for example, Water in the lake (hydrosphere) seeps into the cliff walls behind the dam, becoming groundwater (geosphere), or evaporating into the air (atmosphere). 2. How can an understanding of environmental science aid in handling natural disasters? Everyday life can be disturbed by natural disasters it is very important to study them in order to improve their prediction, prevention, to allay their consequences. 3. What efforts can we make to create a sustainable future? The efforts we can make is to keep putting out safety awareness about natural disasters and to educate everyone about what causes natural disasters.