| A | B |
| Carbon Sinks | A place where lots of carbon is stored bbbbbb |
| Carbon | A element with four bounds |
| Types of Fossil Fuels | Oil, Natural gas, coal |
| Greenhouse effect | Rising Co2 levels caused by humans |
| Resperation | Animals breathing oxygen to make Co2 |
| Photosynthesis | Co2 + Energy = sugar and oygen |
| Main regulator for Co2 | The Ocean |
| Closed cycle | The amount of it never changes |
| Ocean PH | Ocean acidification |
| Volcanoes | natural Co2 source |
| Types of Spheres | Geosphere, Atmosphere, Biosphere, Hydrosphere |
| Ozone Layer | Atmosphere layer that blocks UV rays |
| Crust | Uppermost plates |
| Mantel convection | Movement of magma under the Earth |
| Contenental plate | Plate with a content on it |
| Molten | Not yet cooled |
| Conductor | something that moves an object from on place to another |
| Time since creation of Earth | 4.6 billion years |
| Time since rise in oxygen | 2.3 billion years |
| Location of fossil fuels | Geosphere |