When a pond fills in and a swamp grows in its place, this process is called Ecological succession. So, the correct option is B.
What do you mean by Environment?
Anything which is present in the surrounding of an organism is called its environment.
Ecological succession is the gradual and continuous replacement of one community by another community over time. The superior community exists with respect to time and environment. After the environment changes a new community takes its place and survives in nature.
Therefore, when a pond fills in and a swamp grows in its place, this process is called Ecological succession.
To learn more about Ecological succession, refer to the link:
https://brainly.com/question/10432101
