If evidence of cross bedding was discovered on a barren planet such as Mars,what could you assume was once occurring on the planet?

Question

Quizplus · Accepted Answer

Cross bedding is formed by the movement of water or wind, but in the case of a barren planet with no evidence of glaciers or wind erosion, the most plausible explanation would be the movement of water. Fluvial action, such as the flow of rivers or streams, can create cross bedding in sedimentary rocks, which implies the past presence of water on the planet.

If Evidence of Cross Bedding Was Discovered on a Barren