What are the carbon cycle and the greenhouse effect?
The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Human activities have a tremendous impact on this cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer massive quantities of carbon into the atmosphere. As a result, the amount of carbon dioxide in the atmosphere is rapidly rising — it is now greater than at any time in the last 3.6 million years. For more information check out the Science Learning Hub at https://www.sciencelearn.org.nz/image_maps/3-carbon-cycle.
Type of collateral: Presentation