Please place the steps of primary succession in order from first (top) to last (bottom)

1. Deciduous tree move in
2. Small plants start to grow
3. Evergreen trees start growing
4. Pioneer species arrives (like lichen)
5. Soil starts forming and mosses begin growing
6. Exposed bare rock due to volcanic eruption or glacier

1. exposed bare rock

2. pioneer species
3. Evergreen
4. Soil starts forming
5. Small plant
6. Deciduous tree moves in

The correct order of steps in primary succession is as follows:

6. Exposed bare rock due to volcanic eruption or glacier
4. Pioneer species arrives (like lichen)
5. Soil starts forming and mosses begin growing
2. Small plants start to grow
3. Evergreen trees start growing
1. Deciduous trees move in

To place the steps of primary succession in order, starting from the first step and progressing towards the last step, we can follow these steps:

1. Pioneer species arrives (like lichen)
- This is the initial stage of primary succession, where organisms like lichen colonize the barren area with no soil.

2. Mosses begin growing and soil formation starts
- As the pioneer species (like lichen) grow and die, they contribute to the formation of organic matter that starts accumulating on the bare rock surface. This forms a thin layer of soil where mosses can begin to grow.

3. Small plants start to grow
- Once mosses establish themselves on the thin layer of soil, other small plants and grasses can begin to grow.

4. Deciduous trees move in
- As the soil becomes richer and more developed, deciduous trees, which shed their leaves annually, start to grow.

5. Evergreen trees start growing
- As the habitat continues to develop, evergreen trees, which retain their leaves throughout the year, begin to grow. They often outcompete deciduous trees due to their better ability to survive in harsher conditions.

6. Exposed bare rock due to volcanic eruption or glacier
- This is the initial condition that triggers primary succession, where there is no vegetation or soil and only bare rock due to natural events like volcanic eruptions or retreating glaciers.

So, the correct order of the steps of primary succession is:
4. Pioneer species arrives (like lichen)
5. Mosses begin growing and soil formation starts
2. Small plants start to grow
1. Deciduous trees move in
3. Evergreen trees start growing
6. Exposed bare rock due to volcanic eruption or glacier