Ecological Succession

In your own words, define ecological succession.

How is primary succession different from secondary succession? Give an example of an event that may lead to primary succession.

How can moss and lichen, which may grow in the beginning of primary succession, potentially make it easier for other organisms to grow and live in the same area later on?

What is meant by a pioneer species? Would you expect a shrub or dandelion (dispersed by wind-blown seeds) to be a more likely pioneer plant species? Why?

Explain the sequence of events that occur in secondary succession as you would to a friend who had not yet learned about the process.