Answer:
Pioneer species in primary succession grow in environments without soil, while pioneer species in secondary succession grow in environments that already have soil.
Step-by-step explanation:
The two types of ecological succession are primary and secondary. Primary succession occurs in locations that do not currently have life or soil. Secondary succession occurs in an environment that has life and soil but has had a significant change occur. A wildfire is an example of change that could lead to secondary succession. The first plants to grow during either type of succession are called pioneer species.
Therefore, pioneer species in primary succession grow in environments without soil, while pioneer species in secondary succession grown in environments that already have soil.
(also i got this from study island BTW)