Ecologist: Landfills are generally designed to hold ten years' worth of waste.
Opposing Support
Landfills are generally designed to hold ten years’ worth of waste.
Opposing Point
Some people maintain that as the number of active landfills consequently dwindles over the coming decade, there will inevitably be a crisis in landfill availability.
Premise
However, their prediction obviously relies on the unlikely assumption that no new landfills will open as currently active ones close.
Main Conclusion
[Their prediction] is therefore unsound.
Evaluate
That there will be a crisis in landfill availability is the opposing point in the ecologist’s argument.