Sound waves propagate differently in various natural environments depending on factors such as temperature, humidity, wind speed, and obstacles present in the surroundings. In general, sound waves travel faster and farther in denser mediums like water compared to air. The presence of obstacles such as mountains or forests can cause sound waves to diffract and reflect, affecting how they travel in the environment. Additionally, temperature inversions and wind patterns can also impact the propagation of sound waves by causing them to bend or scatter. Overall, the characteristics of the natural environment play a significant role in how sound waves propagate within it.