The correct answer is A. It is a random process.
Ecological succession is a gradual process of change in the species composition of an ecological community over time. It is a unidirectional process that leads to a more complex community. The following are the correct statements regarding ecological succession:
- Species diversity increases as succession proceeds. This is because as the community changes, new species are able to colonize the area and compete with the existing species. This leads to a more diverse community.
- The food chain relationships becomes more complex. This is because as the community changes, new species are able to interact with each other in different ways. This leads to a more complex food web.
- The role of decomposers becomes more and more important. This is because as the community changes, more and more organic matter is produced. This organic matter needs to be decomposed in order to return nutrients to the soil. Decomposers play an important role in this process.
The statement “It is a random process” is incorrect because ecological succession is a non-random process. It is a predictable process that is driven by the interaction of the environment and the species that live in it.