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Grade 10
Environmental Science
17. Ecosystems
17.2 Biodiversity, Species relationships
Biodiversity & Species Relationships: How Life Connects in Ecosystems
Explore how the variety of life on Earth is maintained through complex species interactions, from mutualism and predation to keystone species and trophic cascades.
What You'll Learn
Biodiversity includes genetic, species, and ecosystem diversity levels.
Symbiosis includes mutualism, commensalism, parasitism, and endosymbiosis types.
Keystone species removal triggers trophic cascades throughout entire ecosystems.
Habitat destruction remains the greatest current threat to global biodiversity.
What You'll Practice
1
Students identify keystone species roles using sea otter ecosystem examples.
2
Questions test competitive exclusion, niche partitioning, and coexistence principles.
3
Learners classify symbiotic relationships including mutualism, parasitism, and commensalism.
Why This Matters
Understanding biodiversity and species relationships is fundamental to explaining how ecosystems function, why they collapse, and how conservation efforts can protect life on Earth.
This Unit Includes
Practice exercises
Learning resources
Skills
Biodiversity
Symbiosis
Keystone Species
Ecological Niche
Food Webs
ON Curriculum Aligned