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Examine two ways in which human activities have altered the natural characteristics of a biome that you have studied. - Leaving Cert Geography - Question 16 - 2008
Question 16
Examine two ways in which human activities have altered the natural characteristics of a biome that you have studied.
Worked Solution & Example Answer:Examine two ways in which human activities have altered the natural characteristics of a biome that you have studied. - Leaving Cert Geography - Question 16 - 2008
Step 1
Examine the impact of deforestation
Answer
Deforestation is a major human activity that has significantly altered the characteristics of many biomes, particularly forest biomes. The removal of trees not only disrupts the habitat for various species but also affects the microclimate of the area. With fewer trees, there is increased sunlight penetration, which can lead to warmer soil temperatures and altered rainfall patterns. Additionally, the loss of trees decreases carbon storage, contributing to higher atmospheric CO2 levels and thus, climate change.
Step 2
Examine the impact of urbanization
Answer
Urbanization transforms natural landscapes into built environments, which drastically change the characteristics of biomes such as wetlands or grasslands. The construction of cities leads to habitat fragmentation and the loss of biodiversity. Further, urban areas often influence local climates; for example, heat islands may form due to asphalt and concrete absorbing heat, resulting in altered local weather patterns. Water runoff is also affected, often leading to increased flooding due to the decreased absorption of rainwater by soil and vegetation.