Describe an ecosystem that is balanced

Sealed bottle gardens are a perfect example. They contain soil, a few plants which were watered once. The plants were able to photosynthesise and respire, nutrients and water were continually recycled as the container was sealed.

Explanation:

A balanced ecosystem represents a sustainable habitat of interdependent animals, plants, and microorganisms and their environment. Balanced ecosystems display efficient energy and material cycling and interconnectedness between primary producers and predators.

correct answer is a. and d.