the sentences below describe the formation of a waterfall.write them out in the correct order
wher the water hits the softer rock a plunge pool develops.
water flows over resistant and then less resistant rock.
the hard rock eventually collapses and the waterfall retreats backwards.
the river erodes the less resistant rock,causing in the river course.
the softer rock of the step is eroded,undercutting beneath the harder rock.
the softer rock is eroded quickly and the water falls over the step.
1. Water flows over resistant and then less resistant rock.
2. The softer rock of the step is eroded, undercutting beneath the harder rock.
3. The softer rock is eroded quickly and the water falls over the step.
4. The river erodes the less resistant rock, causing a step in the river course.
5. Where the water hits the softer rock, a plunge pool develops.
6. The hard rock eventually collapses and the waterfall retreats backwards.