This task is about erosion over time.
The sequence A shows the erosion at a waterfall over a period of time.
Sequence A
| River | ||
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 |
 |
| 1 | 2 | 3 |
Complete the two diagrams in each of Sequence B and C showing the erosion of these waterfalls over a similar length of time as sequence A.
Key:  Soft rock  Hard rock |
| Sequence B | ||
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|
 |
|
| 1 | 2 | 3 |
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||
| Sequence C | ||
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|
|
|
| 1 | 2 | 3 |
