How do the earth’s systems affect each other? The hydrosphere affects the geosphere because of how it affects the animals as well as when a parcel of air in the atmosphere becomes saturated with water, and precipitation, such as rain or snow. How can an understanding of environmental science aid in handling natural disasters? An understanding of environmental science can easily aid in handling natural disasters as with the knowledge you know things to do during the event to improve your and other’s chances as well as what to do after to best recover from the event. What efforts can we make to create a sustainable future?