The completed sentence should read: "Because natural disasters are caused by natural processes, they cannot always be predicted."
Explanation:
1. Natural disasters such as earthquakes, hurricanes, and volcanic eruptions are a result of natural processes like tectonic plate movement, atmospheric conditions, and geological events.
2. These natural processes can be complex and influenced by various factors, making it difficult to accurately predict when and where a natural disaster will occur.
3. While scientists have developed methods to forecast certain types of disasters to some extent, the exact timing and magnitude of events remain unpredictable due to the complexity of natural systems.
By understanding that natural disasters stem from natural processes that are inherently unpredictable, we can appreciate the challenges associated with forecasting and preparing for such events.
