Question

which would most likely trigger a climate change that could lead to a mass extinction?
a. earthquakes
b. volcanic outgassing
c. glacier movement
d. formation of a supercontinent

Explanation:

To determine the answer, we analyze each option:

• Option A: Earthquakes primarily affect local geology and structures, not global climate on a scale to cause mass extinction.
• Option B: Volcanic outgassing releases gases, but its impact on climate for mass extinction is less direct compared to supercontinent formation.
• Option C: Glacier movement affects local/regional environments, not global climate enough for mass extinction.
• Option D: Formation of a supercontinent (e.g., Pangaea) changes ocean currents, wind patterns, and land - sea distribution, leading to drastic climate shifts (like extreme aridity, temperature changes) that can disrupt ecosystems globally and cause mass extinction.

Answer:

D. Formation of a supercontinent