EVERYDAY SCIENCE

Detailed explanation-1: -Primary succession occurs when disturbances (such as glacial advances and retreats, volcanoes, earthquakes, landslides, scouring floods, or very hot-burning fires) remove the soil and organisms from a site, leaving only bare rock, gravel, silt, or sand.

Detailed explanation-2: -Secondary succession is the secondary ecological succession of a plant’s life. As opposed to the first, primary succession, secondary succession is a process started by an event (e.g. forest fire, harvesting, hurricane, etc.)

Detailed explanation-3: -Primary succession occurs when new land is formed or bare rock is exposed, providing a habitat that can be colonized for the first time. For example, primary succession may take place following the eruption of volcanoes, such as those on the Big Island of Hawaii.