Primary Succession
After these mountains and volcanoes were formed, the next stage of the making of which we now call death valley was influenced on the volcanic activity that had taken place. After the volcanic eruptions the molten lava that cooled down, Lichens and mosses are gradually overgrown by larger plants that sprout from seeds that were blown in from other places which colonized the area. Lichens and mosses require very few nutrients and do not need soil to survive. Instead, they can grow directly on solid rock surfaces where they begin the process of soil formation. After soil was created by the mosses and lichens, grasses and small plants begin to colonize and dominate the habitat. These small plants then begin to be replaced by shrubs and small trees, which in turn give way to more and more animals came and started to live in Death Valley.
Secondary Succession
Unlike primary succession, secondary succession is different; secondary succession occurs where a disturbance has cleared away an existing community by left the soil intact. For example Death Valley is a desert biome so when flash floods occur the community is cleared away but the soil is left intact providing new life to begin.