Put the steps of primary succession in the correct order?

Short grasses grow tall in the rich soil.

When pioneer species die, nutrient are added to the soil,

Lichens begin to grow on the surface of exposed rocks.

Lichens begin to grow on the surface of exposed rocks.

When pioneer species die, nutrients are added to the soil.

Short grasses grow tall in the rich soil.

Explanation:

Primary succession occur in an area or region where there has not been life existence before. It occur when new land is formed or bare rock is exposed and it is colonized first by living things. It occur when there is volcanic eruptions and soil which contain nutrients are released which support the growth of pioneer species like lichens, missed. The steps to primary succession are,;

Growth of of pioneer species one lichens on exposed rock surface, when pioneer species die nutrients are added to the soil and short grasses grow tall in the rich soil.