After an extreme disturbance, what is the first thing to form in an ecosystem? (1 point)

• rock
• a group of lichens
• sand
• the plant community

1 answer

After an extreme disturbance, the first thing to form in an ecosystem is typically a group of lichens. Lichens are often among the first organisms to colonize bare rock and contribute to the formation of soil, facilitating the establishment of other plant communities over time.