1. What sphere caused the event?
2. What are the effects of the event on one or more spheres?
3. What is the global implication of the event?
Answers
1. These spheres are closely connected. For example, many birds (biosphere) fly through the air (atmosphere), while water (hydrosphere) often flows through the soil (lithosphere). In fact, the spheres are so closely connected that a change in one sphere often results in a change in one or more of the other spheres.
2. An event can cause changes to occur in one or more of the spheres, and/or an event can be the effect of changes in one or more of Earth's four spheres. This two-way cause and effect relationship between an event and a sphere is called an interaction. Interactions also occur among the spheres.
3. The OECD defines global events as events of a limited duration that have a global reach, require significant public investment and have an impact on the population and built environment.
→ Sphere caused the event:
As we know that changes occur in spheres due to an event. One or more of earth four spheres caused the event.
→ Effects of the event on one or more spheres:
The event on one or more spheres caused changes. Interaction between the sphere and an event also occurs.
→ Global implication of the event:
As we know it involves a global reach, is a small event.
The global implication of the event involved impacting the public, requiring significant public investment, etc.