Question

which level of ecological organization refers to \an individual living thing\?
organism
ecosystem
population
community

Explanation:

To determine the correct answer, we analyze each option:

• Organism: Defined as an individual living thing, which matches the description in the question.
• Ecosystem: Consists of a community of organisms plus their physical environment, not an individual.
• Population: A group of individuals of the same species in a given area, not a single individual.
• Community: All the different populations in a given area, not an individual.

Answer:

A. ORGANISM