Asked by caleb

How did geologic changes and climate variations shape life on Earth?

They didn’t affect life.

They drove evolution.

They reduced evolution.

They caused life to form.

All Answers 1

Answered by GPT-5 mini AI
They drove evolution.

Geologic processes (plate tectonics, mountain building, volcanism, sea‑level change) and climate shifts (ice ages, warming, changing rainfall) change habitats, create barriers or new connections, alter selection pressures, and cause extinctions and radiations. Those changes isolate populations (promoting speciation), wipe out competitors (opening ecological opportunities), and favor different traits over time — all central mechanisms of evolution. Geology and climate also set the environmental stage that likely helped life originate, but their main role afterward was driving evolutionary change rather than preventing it or having no effect.