❓ 题目 According to the passage, what is a key implication of deep time for understanding environmental change?
- A. A) Environmental changes are always gradual and steady over long periods.
- B. B) The Earth system may undergo sudden, threshold-driven shifts that short-term data cannot predict.
- C. C) Uniformitarianism proves that present-day rates of geological processes are identical to past rates.
- D. D) Human-induced climate change is insignificant compared to natural geological processes.