EVERYDAY SCIENCE

Detailed explanation-1: -Population: A population is a group of organisms of the same species that live in the same area at the same time. Population ecologists study the size, density, and structure of populations and how they change over time.

Detailed explanation-2: -A community is all of the populations of different species that live in the same area and interact with one another. A community is composed of all of the biotic factors of an area. An ecosystem includes the living organisms (all the populations) in an area and the non-living aspects of the environment (Figure below).

Detailed explanation-3: -Ecosystem: The collection of all living organisms in a geographic area, together with all the living and non-living things with which they interact. Terrestral Ecosystems (land-based) ecosystems. Natural Community: Populations of different plant and animal species interacting among themselves in an area.

Detailed explanation-4: -Ecosystem: An ecosystem consists of all the organisms in an area, the community, and the abiotic factors that influence that community.