MISSION 2 — Fossils: Rocking the Earth
Fossils provide us with a historical record of life on Earth. There are many types of fossils, from extraordinary unaltered remains trapped in permafrost or amber, to subtle traces of past activities in the form of footprints and burrows. The fossils that we have found provide windows into the past and direct evidence of evolution.
Watch the video and answer questions 1–2 below.
| Keyboard Shortcut | Action |
|---|---|
| Space | Pause/Play video playback |
| Enter | Pause/Play video playback |
| m | Mute/Unmute video volume |
| Up and Down arrows | Increase and decrease volume by 10% |
| Right and Left arrows | Seek forward or backward by 5 seconds |
| 0-9 | Fast seek to x% of the video. |
| f | Enter or exit fullscreen. (Note: To exit fullscreen in flash press the Esc key. |
| c | Press c to toggle captions on or off |
1. If these rock layers have been undisturbed, which layer is the oldest? Which layer is the youngest? Mark your answer on the image by using the "Visualize It" tool below.
2. Click the button below to answer question 2. Remember to refer to the video if you are not sure of your answer.
