Examine, with reference to example(s) that you have studied, how human activities have impacted on either river, coastal or mass movement processes. - Leaving Cert Geography - Question C - 2012
Question C
Examine, with reference to example(s) that you have studied, how human activities have impacted on either river, coastal or mass movement processes.
Worked Solution & Example Answer:Examine, with reference to example(s) that you have studied, how human activities have impacted on either river, coastal or mass movement processes. - Leaving Cert Geography - Question C - 2012
Step 1
Human activity identified
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Answer
The construction of dams along rivers has significantly altered natural water flow and sediment transportation, impacting aquatic ecosystems.
Step 2
Impact identified
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Answer
The alteration of river flow affects fish migration patterns and can lead to sediment accumulation in different areas, deteriorating habitats.
Step 3
Named example
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Answer
An example is the construction of the Hoover Dam on the Colorado River, which has drastically changed the river's natural ecosystem.
Step 4
Examination of further impacts
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Answer
Additionally, urban development along riverbanks often leads to increased pollution and runoff, further degrading water quality.
Step 5
Examination of mass movement processes
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Human activities such as deforestation can increase the risk of landslides by removing vegetation that stabilizes the soil.
Step 6
Relevant diagrams
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A labelled diagram illustrating sediment flow changes before and after dam construction can enhance understanding of these processes.
Step 7
Additional named example
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Answer
In Ireland, the River Lee has been impacted by urbanization, resulting in increased flooding and erosion along its banks.
Step 8
Outcome of impacts
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Answer
Overall, these human interventions can lead to significant ecological consequences, emphasizing the need for sustainable practices.
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