They are dried out rivers most scientists think. so you can call them rivers yes
list of rivers,mountains,plains,and valleys
yes mars has valleys made by erosion.
yes there is
NO, it has craters
valleys some of the tallest mountains and deepest valleys known in the solar system.
Yes. Many.
Yes
Erosion
Mars has no rivers.
Yes. Mars has gigantic valleys. The greatest is the Valles Marineris, which makes the Grand Canyon look tiny.See related link for more information
what can you study of the natural featurs of a place or region such as its mountains valleys deserts and rivers
It has craters, caused by meteors hitting it. It also has valleys. You can exlopre it using Google Earth and there are some huge valleys.