With reference to an example you have studied, describe and account for one way in which humans attempt to influence or control natural processes - Leaving Cert Geography - Question 1 - 2008
Question 1
With reference to an example you have studied, describe and account for one way in which humans attempt to influence or control natural processes. In your answer, re... show full transcript
Worked Solution & Example Answer:With reference to an example you have studied, describe and account for one way in which humans attempt to influence or control natural processes - Leaving Cert Geography - Question 1 - 2008
Step 1
Identify influence/control
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Answer
One way in which humans influence natural processes is through the construction of dams, specifically in relation to fluvial processes. Dams are built across rivers to control water flow, prevent flooding, and generate hydroelectric power.
Step 2
Named Example
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Answer
An example of this is the Hoover Dam located on the Colorado River in the United States. This dam significantly alters the natural flow of the river.
Step 3
Reference to natural processes
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Answer
The construction of the Hoover Dam impacts natural fluvial processes by regulating sediment transport and altering ecosystems. This control has profound effects on both upstream and downstream environments.
Step 4
Discussion
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Answer
The discussion on the influence of dam constructions such as the Hoover Dam reveals numerous aspects of both positive and negative impacts on the environment. Positively, the dam provides water storage, irrigation, and energy for surrounding communities, demonstrating human ability to harness natural resources sustainably. Negatively, however, it disrupts natural sediment flow, which can lead to erosion downstream and affect aquatic habitats. Furthermore, the dam alters river temperature and flow regimes, impacting species that depend on specific conditions for spawning. The construction reflects a decision to prioritize human needs over natural processes, emphasizing a critical balance that must be managed. Overall, while dams serve essential functions, they exemplify the complexity of human attempts to influence and control natural systems.
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