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Living Things Interact

Explore how living things interact within ecosystems, from individuals to populations and communities. Learn about habitats, niches, limiting factors, and population density in this educational resource.

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Living Things Interact

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  1. LivingThingsInteract Developed by Trent Voyles

  2. Ecosystems • All the living and nonliving things that interact with each other in an environment. • Ecosystems include individuals, populations, and communities. • In a healthy ecosystem, populations are interdependent.

  3. Individuals and Populations • A single organism in an environment is called an individual. • Individuals of the same kind living in the same environment make up a population.

  4. Community • All the populations of organisms living together in an environment make up a community.

  5. Habitat comes from the Latin verb meaning “to dwell.” An organism’s habitat is where it dwells or lives. A niche is a certain role that each population has in its habitat. Eagles and owls share the same habitat and food. Eagles hunt during the day and owls at night, different niches. HabitatandNiche

  6. Limiting Factors • Limiting factors include the following: • Soil conditions • Temperature • Rainfall • Number of Plants • Amount of Food

  7. Population Density • Population density is the number of animals in a certain area. • Limitedresources, such as food, will affect the size of populationthat can live in a certain area.

  8. Nonliving things that affect the organisms living in an ecosystem include weather, landforms, and – A. Habitat B. Niche C. Soil D. Population

  9. Nonliving things that affect the organisms living in an ecosystem includes weather, landforms, and - C. Soil

  10. An ecosystem is made up of a community and its - • Population • Environment • Niche • Landform

  11. An ecosystem is made up of a community and its - B. Environment

  12. The types and number of animals in an ecosystem are determined by the - • Types and number of plants B. Types and number of communities C. Types and numbers of individuals D. Population density

  13. The types and number of animals in an ecosystem are determined by the - A. Types and numbers of plants

  14. In a healthy ecosystem populations of living things are - A. Independent B. Enemies C. Interdependent D. Large

  15. In a healthy ecosystem populations of living things are - C. Interdependent

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