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PlayOwl

Science · Grade 9

Human Impacts and Biological Solutions

Learners analyse how habitat loss and fragmentation, invasive species, overharvesting, pollution and climate change affect populations, using species–area, sustainable-yield, biomagnification and timing data. They explain why biodiversity and genetic diversity matter for ecosystem services and resilience, and finish by evaluating conservation and restoration solutions with criteria, constraints, weighted decision matrices and monitoring data.

  • 5 lessons
  • About 125 minutes
  • Human impacts and solutions check: 12 questions
  • Ways to answer: choose an answer, draw a graph, match pairs, type a number, put in order and sort into groups
See plans Included with Family, Teacher and School plans. Open in PlayOwl

What learners will discover

  • Explain how habitat loss and fragmentation, invasive species and overharvesting reduce populations and biodiversity, using species–area and sustainable-yield models.
  • Explain the value of biodiversity, including ecosystem services, resilience and genetic diversity, and calculate the loss of genetic variation in small populations.
  • Analyse data on pollution (eutrophication, biomagnification) and climate change (range shifts, timing mismatches) and explain their effects on organisms.
  • Evaluate conservation and restoration solutions using criteria, constraints, trade-offs, weighted decision matrices and monitoring data.

Lessons

  1. Habitat loss and fragmentation 9 steps5 practiceabout 25 min
  2. Invasive species and overharvesting 8 steps5 practiceabout 24 min
  3. Pollution and a changing climate 8 steps5 practiceabout 26 min
  4. Why biodiversity matters 8 steps5 practiceabout 23 min
  5. Evaluating biological solutions 8 steps5 practiceabout 27 min
  6. Human impacts and solutions check 12 questions at the end

Keep exploring

More 9th grade science

Guide for grown-ups