Answer:
5 characteristics features of youthful valley are
Explanation:
Valley, elongate depression of the Earth's surface. Valleys are most commonly drained by rivers and may occur in a relatively flat plain or between ranges of hills or mountains. Those valleys produced by tectonic action are called rift valleys. Very narrow, deep valleys of similar appearance are called gorges.
From plants because they give off oxygen so EVERYWHERE
Joseph Stalin was the most important person of the formation of the Soviet Union