Question

question 1 - 10
below are four different student examples of primary succession
student 1: a hurricane destroys the majority of trees in a tropical rainforest.
student 2: a tsunami hits an island, leaving behind soil and trees with an established root system.
student 3: a glacier recedes, stripping the land of all soil.
student 4: a volcano releases a large amount of gas and ash, decreasing the plant population in the area.
which student gave a correct example of an event that led to primary succession?
student 1
student 2
student 3
student 4

Explanation:

Primary succession occurs in an area where there is no pre - existing soil or organisms. Student 3's example of a glacier receding and stripping the land of all soil is correct as it starts with a bare, lifeless substrate. Student 1's hurricane - affected rainforest has existing soil and some remaining organisms, so it's secondary succession. Student 2's tsunami - hit island still has soil and established root systems, which is secondary succession. Student 4's volcanic area with decreased plant population still has soil in most cases, which is secondary succession.

Answer:

Student 3