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Sorry, I dont understand what the question is
14 June 2011
i will explain the question in a differnant way. What do rivers and glaciers do to fragments of rock? Is that easier to understand ?
14 June 2011
They break them up and wear them down and eventually into sand along their journey
14 June 2011
In rivers they bounce against the river bed or wear away against each other and initally make them more rounded and smooth
14 June 2011
'slower'
14 June 2011
There is a similar process with glaciers but obviously it takes a lot longer as the glacier moves much slover
14 June 2011
also with the melting and re-freezing of the glacier this puts pressure on the rocks and breaks them up as melted water enters into cracks, freezes and expands the cracks eventually breaking them into smaller pieces
14 June 2011
thank you
15 June 2011
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