It has been claimed that geological and meteorological events have influenced ecosystem change on Earth.

a) Explain how biogeography and continental drift provide evidence of ecosystem change over time.

b) Explain how the meteor impact that led to extinction of the dinosaurs is another historical event that provides evidence of ecosystem change over time.

c) Consider that the climate changes we are experiencing now could become more extreme. Predict the influence of such extremes on ecosystems in the future.