13. Pictorial examples shown in the W, X, Y, Z boxes

represent levels of ecological organization in a Savanna
Biome. Use the pictures below to answer the following
questions.

Which letter represents a community?

[Choice A] W, a group of one type organism interacting
with an environment
[Choice B] X, many types of organisms interacting with
their nonliving environment
[Choice C] Y, a single lion resting by itself and not
interacting
[Choice D] Z, a group of zebras and wildebeests
interacting

The correct answer is [Choice D] Z, a group of zebras and wildebeests interacting. This represents a community, which is defined as many different types of organisms interacting with each other in a particular area.

The letter that represents a community is:

[Choice B] X, many types of organisms interacting with their nonliving environment

To determine which letter represents a community, we need to understand what a community is. A community is a group of different species living and interacting with each other in a particular area.

Looking at the given options:

[Choice A] W represents "a group of one type organism interacting with an environment." This sounds more like a population, which refers to a group of individuals of the same species living in the same area.

[Choice B] X represents "many types of organisms interacting with their nonliving environment." This suggests an ecosystem, which includes all the living organisms (biotic) and their physical environment (abiotic) interacting with each other.

[Choice C] Y represents "a single lion resting by itself and not interacting." This does not represent a community, as it only involves a single organism and no interaction with other species.

[Choice D] Z represents "a group of zebras and wildebeests interacting." This is the closest representation of a community since it involves multiple species (zebras and wildebeests) interacting with each other.

Based on the definitions provided, the correct answer would be [Choice D] Z, which represents a community.