Science · Ecosystems

Ecosystem Vocabulary

Middle school ecology words: biotic, abiotic, niche, symbiosis, biodiversity and more.

  • 🎓 Grades 6–8
  • 🧪 Science
  • 📐 MS-LS2-2
  • ❓ 20 questions
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  1. ecosystem

    All the living and nonliving things in an area

  2. biotic

    Living part of an ecosystem

  3. abiotic

    Nonliving part of an ecosystem

  4. population

    All members of one species in an area

  5. community

    All the populations living in an area

  6. biome

    Large region with a similar climate and life

  7. niche

    The role an organism plays in its ecosystem

  8. organism

    Any single living thing

  9. species

    Group of organisms that can breed together

  10. symbiosis

    Close relationship between two species

  11. mutualism

    Relationship where both species benefit

  12. parasitism

    Relationship where one species is harmed

  13. commensalism

    One species benefits, the other is unaffected

  14. competition

    Struggle between organisms for the same resources

  15. biodiversity

    Variety of living things in an area

  16. succession

    Slow change of a community over time

  17. invasive species

    Non-native species that harms an ecosystem

  18. extinction

    When a species no longer exists anywhere

  19. carrying capacity

    Largest population an area can support

  20. limiting factor

    Something that keeps a population from growing

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