they are formed by wind
No. Wind can cause some erosion, but it cannot form valleys. Yosemite valley was formed by glaciers.
Moving water forms a valley be eroding the soil underneath it. As the water moves across the soil it takes some with it, this can form a valley over millions of years.
in a valley where wind is
wind and water
If you mean Nausicaa of the Valley of the Wind, then yes, it is.
Valley breeze is a type of wind in the mountains. Katabatic wind is down hill wind.
wind water ice gravity
Monument Valley is a region of the Colorado Plateau characterized by its unique sandstone formations, known as buttes and mesas. These landforms were created through millions of years of erosion from wind and water, resulting in their distinctive shapes and colors that make Monument Valley a popular tourist destination.
It is NOT tides. I did this on study island, and the CORRECT ANSWER: WAVES
The glacier will melt eventually, and then form a valley, as well as water flowing through that valley; and it may even help form new valleys.
Generally soil erosion caused by water, wind or both.