A 85–115 word secondary-source excerpt on a tropical forest frontier states that road building and cattle ranching increase deforestation, which reduces evapotranspiration and can lower local rainfall. The author notes that drier conditions then raise wildfire risk, further accelerating forest loss and impacting nearby farming. Which choice best captures the excerpt's central theme?
- Human determinism: land clearing has no effect on climate or fire regimes
- Environmental determinism: rainfall patterns alone cause deforestation regardless of human decisions
- Climate change as human-environment interaction: human land-use change alters local climate processes that feed back on society (correct answer)
- One-way interaction: forests shape people, but people cannot alter forests at scale
- Conflation of determinism with possibilism: the excerpt claims ranching both causes and does not cause forest loss simultaneously
Explanation: This excerpt demonstrates climate change as a human-environment interaction through a feedback mechanism between deforestation and local climate. Human activities (road building and cattle ranching) drive deforestation, which reduces evapotranspiration and can lower local rainfall, creating drier conditions that increase wildfire risk, which further accelerates forest loss. This creates a self-reinforcing cycle where human land-use changes alter local climate processes, which then feed back to affect both ecosystems and human activities like farming. The excerpt shows how human modifications to the environment can trigger cascading effects that ultimately impact society. This bidirectional causation and feedback loop exemplifies the complex interactions characteristic of human-induced climate change at a regional scale.