7.1 - The Earth's Changing Climate

Imagine standing on a beach in the Bahamas during a much colder time in Earth’s past. Sea level was lower, parts of the shallow banks were more exposed, and coastlines looked different. Now imagine a warmer time when sea level rose and coral reefs had to ‘move’ or adapt. Climate change is not new. Earth has changed naturally many times, and those changes reshaped environments. Big idea: Weather changes day to day; climate is the long‑term pattern (usually 30+ years). Today’s lesson helps you explain past climate change and its effects using scientific evidence.