The given question is incomplete, the complete question is:
A new mountain lake just formed by a retreating glacier. The lake starts out with little nutrients or life, but over time it begins to support a variety of species.
Which type of succession does this describe?
secondary
primary
island
aquatic
Answer:
The correct answer is primary succession.
Step-by-step explanation:
The development of an ecosystem in a region where no form or sign of life existed before is termed as primary succession. In the mentioned case, a glacier at the start did not support any form of life, however, it started producing a mountain lake where some form of life started to appear gradually. With time, the development of the pioneer community will take place, which will eventually get transformed into a climax community.
In comparison, a kind of succession that takes place in the regions where life prevailed before but got destroyed or eliminated due to natural disasters or human applications is termed secondary succession.