Answer:It's False
There are four other bodies in our solar system that is volcanic activity.They are:
1. Earth
2.A moon of Jupiter
3.Triton,a moon from Neptune
4.Enceladus,a moon from Saturn
Hope this helps :)
Found at the lowest point of a large drainage area, these seasonal, marsh-like ponds collect and store water from rain and runoff. Unlike vernal pools, playas generally fill when temperatures are unsuitable for plant growth, and often the water is salty, alkali or both.
source- google