Compare primary and secondary succession of an ecosystem. what is the distinction between them? a) primary succession is the sequence of plants that colonize a new area, while secondary succession is the sequence of animals that move once plant life is established. b) primary succession is the sequence of species that become established early in a newly colonized area, while secondary succession is the sequence of species that move in much later. c) primary succession is the establishment of a new community in an existing ecosystem that was disturbed, while secondary succession is the establishment of a community in an area that was altered due to fire. d) primary succession is the establishment of a community in an area with no soil, while secondary succession is the establishment of a new community in an existing ecosystem that was disturbed by some catastrophic event.