Answer;
A. Elements of ecosystems are mutually dependent on each other.
Explanation;
-An ecosystem consists of the interdependent and interacting components of the natural environment in a geographic area. It has both living elements, such as plants and animals, and non-living elements, such as soil and water.
-Biotic factors are the living aspects of the environment. They consist of other organisms, including members of the same and different species.
-Abiotic factors are the nonliving aspects of the environment. They include factors such as sunlight, soil, temperature, and water.