Question

Which of the following are good examples of what allows us to classify something as an ecosystem?

• A. Collision of two oxygen molecules in isolation
• B. Animals consuming plants
• C. Humans constructing buildings and shelters
• D. Dead plants decomposing

Answer 1

Answer: (B), (C), (D)

The correct options are
B Animals consuming plants
C Humans constructing buildings and shelters
D Dead plants decomposing

An ecosystem consists of the biotic components interacting with other biotic or abiotic components. So, a living organism is a must for an ecosystem to exist. The collision of two oxygen molecules in isolation does not involve any biotic components. However, by definition, the process of humans inhaling oxygen may be considered to be a part of an ecosystem.