A certain savanna grasshopper changes colour from green during the rainy season to brown during the dry season and black after dry season bush fires. The re...

The reason for the colour changes in a certain savanna grasshopper is that it is adapting to changes in its environment and avoiding predation. During the rainy season, the grass is green and lush, and the grasshopper's green colouration helps it blend in with its surroundings and avoid being spotted by predators. In the dry season, the grass dries up and turns brown, and the grasshopper changes to a brown colour to blend in with its new surroundings. After dry season bush fires, the grass is burned, and the grasshopper changes to a black colour to blend in with the burnt surroundings. This helps it avoid being seen by predators that might be searching for prey in the burnt area. Therefore, the reason for the colour changes in this savanna grasshopper is that it is adapting to changes in its environment and avoiding predation. By changing its colour to match its surroundings, the grasshopper is better able to hide from predators and increase its chances of survival.