Key Idea.
Section 1
Synthesizing the Argument
A complete scientific argument synthesizes multiple pieces of evidence. Students combine food web data, predator counts, and resource surveys to build a case.
They form a claim about the primary cause of the decline, supporting it with clear reasoning that links the cause (e.g., increased predation) to the effect (population decrease).
Section 2
Cause and Effect
The case of the Orange-Bellied Parrot illustrates the sensitivity of ecosystems. Conclusions must be supported by evidence linking a change (the cause) to the observed outcome.
Through collaborative discourse, students confirm that the introduction of a new predator destabilized the birth/death balance, leading to the parrot's near extinction.
Expand to review the lesson summary and core properties.
Section 1
Synthesizing the Argument
A complete scientific argument synthesizes multiple pieces of evidence. Students combine food web data, predator counts, and resource surveys to build a case.
They form a claim about the primary cause of the decline, supporting it with clear reasoning that links the cause (e.g., increased predation) to the effect (population decrease).
Section 2
Cause and Effect
The case of the Orange-Bellied Parrot illustrates the sensitivity of ecosystems. Conclusions must be supported by evidence linking a change (the cause) to the observed outcome.
Through collaborative discourse, students confirm that the introduction of a new predator destabilized the birth/death balance, leading to the parrot's near extinction.