| Term | Definition |
|---|---|
| Ancient Life Forms | Plants or animals that are very old. They existed many thousands and millions of years ago. |
| Catastrophic Events | A natural incidence or occurence that causes destruction and change in the environment. Catastrophic events include volcanic eruptions, earthquakes, tsunamis, and severe weather events, such as hurricanes, tornadoes and floods. |
| Climate Change | A long-term change in daily weather conditions, such as temperature, precipitation, and wind patterns, over periods ranging from decades to millions of years. |
| Endangered Species | Any organism that is in danger of becoming extinct |
| Extinct | Plants or animals that once lived on the Earth but have all died. |
| Fossils | The remains or traces of ancient living things. |
| Habitat Destruction | A process that results in the devastation of a natural habitat causing the displacement or death of plants and animals in the region. The habitat is changed or destroyeds o it can no longer support the organisms in their growth and survival. |
| Modern Life Forms | Plants and animals that exist right now or have existed within modern history. |
