The Carbon Cycle & ToK Connections

Today we reviewed the carbon cycle (click the picture to link to the animation and background information.We also saw not one, but two ToK links in the biology syllabus. The first one we saw was the Gaia Hypothesis. Here's a connection between the Gaia Hypothesis and carbon dioxide

"(C02) in the Earth's atmosphere is far less abundant than chemistry alone would allow. If life was deleted carbon dioxide would become 30 times more abundant. Large quantities of carbon dioxide are currently locked up by living organisms." (taken from the aforementioned Gaia Hypothesis link)

We finished the class with students completing a timed writing prompt on Topic 5.2.5

Your homework is to study for your quiz on Topic 5.1 in class on Wednesday. Anything in the syllabus for topic 5.1 is fair game.