Final answer:
Yes, the current climate change is unusual compared to earlier climate changes in Earth's history, with geological evidence and documented results supporting this fact.
Step-by-step explanation:
Yes, the current climate change is unusual compared to earlier climate changes in Earth's history. While Earth has experienced periodic cycles of temperature increases and decreases, the rapid change since the Industrial Revolution is unprecedented in human history. Geological evidence shows that modern-day phenomena like retreating glaciers and melting polar ice contribute to a continual rise in sea level, which is a documented result of climate change. Scientists also rely on historical evidence of Earth's past climate, as they cannot directly measure climate variables. Natural drivers of climate change, such as changes in solar activity and volcanic eruptions, do not lead to the rapid increases in global temperature and sustained increases in carbon dioxide that we observe today.