Review 1
Let's review what you have learned. Match the statements below with the correct phrase.

This activity might not be viewable on your mobile device.Interactive exercise. Assistance may be required.

Review 2
In your notes, explain how the pictures below have altered the carbon cycle.

image is trees being cut down in a forest image is smoke coming from smoke stacks in a factory
image is many cars driving on a highway

Sources for the images as they appear from top to bottom