Respuesta :
Answer:
The correct answer is option D. "All of these are true".
Explanation:
Primary succession is the first ecological succession at which plants and animals colonized a new area. This new barren area usually is a that does not have soil and did not have life before the primary succession took place. On the other hand, secondary succession does not occur in an area where life never existed, but in an area that already had life and soil, but a major disturbance obliterated the living beings that used to live there.