Question: Which level of ecological organization includes all the living organisms in a particular area?a) Populationb) Communityc) Ecosystemd) Biome

To answer the question, we need to understand the different levels of ecological organization and determine which one includes all the living organisms in a particular area.

Step 1: Understand the levels of ecological organization Ecological organization refers to the hierarchical structure of ecosystems, where different levels represent different components and interactions within an ecosystem. The levels of ecological organization, from smallest to largest, are population, community, ecosystem, and biome.

Step 2: Define each level of ecological organization a) Population: A population refers to a group of individuals of the same species living in the same area and interacting with one another. b) Community: A community refers to all the populations of different species living and interacting in the same area. c) Ecosystem: An ecosystem includes all the living organisms (both populations and communities) in a particular area, as well as the non-living components such as soil, water, and air, and the interactions between them. d) Biome: A biome is a large-scale ecological area characterized by specific climate, vegetation, and animal life.

Step 3: Determine the correct level Based on the definitions provided, the level of ecological organization that includes all the living organisms in a particular area is the ecosystem (option c).

Therefore, the correct answer to the question is c) Ecosystem.