Question

question 17
which of the following correctly defines an ecosystem?
the dependence of species upon one another
a biological community of living and nonliving organisms and their environment
the variety of life existing in a specific region
the practice of using resources without depleting them for future societies

Explanation:

An ecosystem is defined as a biological community of interacting organisms (living) and their physical environment (non - living). The first option only refers to species dependence, the third is about biodiversity in a region, and the fourth is about sustainable resource use.

Answer:

A biological community of living and nonliving organisms and their environment