Identify which one of the following is an example of incomplete ecosystem?

Options

A. Grassland
B. Cave
C. River
D. Wetland

Answer

B

Explanation

The ecosystems that do not contain all the four basic components i.e. abiotic substance, producers, consumers, decomposers are called an incomplete
ecosystem. e.g. The abyssal depth of sea and caves lack produces by containing only consumers and decomposers.