| A | B |
| Volcano eruption in indonesia in 1815 | Mt Tambora |
| soil at or below freezing point | permafrost |
| gas given off by volcano that can cool the atmosphere | sulfur dioxide |
| example of a supervolcano | Yellowstone |
| 26x stronger greenhouse gas than carbon dioxide | methane |
| cause of the the little ice age 400 years ago | sunspots |
| when the average surface temperature of Earth is warmer | hot house climate |
| long period of cold temperatures | ice age |
| these may become more intense as ocean temperatures increase | hurricanes |
| can bring carbon dioxide from space to Earth | comet |
| thes emay occur more often on land as climate gets warmer | tornadoes |
| massive freezing event billions of years ago | Snowball Earth |