Summary and Exam Tips for Habitat Destruction
Habitat Destruction is a subtopic of Human influences on the environment, which falls under the subject Science in the IB MYP curriculum. Biodiversity refers to the variety of species in a given area, and it is severely threatened by habitat destruction. The primary causes include the expansion of land for housing, agriculture, and livestock, as well as the extraction of natural resources and pollution of both freshwater and marine environments. These activities disrupt food webs and chains, leading to negative impacts on habitats.
Deforestation exemplifies habitat destruction, resulting in reduced biodiversity, extinction, soil erosion, flooding, and increased atmospheric carbon dioxide. The removal of forests leads to desertification, soil erosion, and climate changes, such as decreased rainfall and increased temperatures. The increasing human population exacerbates these issues, as more land is cleared for economic activities, further diminishing biodiversity and destabilizing ecosystems.
Exam Tips
- Understand Key Terms: Familiarize yourself with terms like biodiversity, deforestation, and desertification. Use these terms accurately in your answers.
- Focus on Causes and Effects: Be clear about the causes of habitat destruction and their effects on ecosystems. For example, explain how deforestation leads to soil erosion and climate changes.
- Answer Structure: Pay attention to the number of marks allocated to a question to gauge the depth of your response. Use structured answers with clear points.
- Question Interpretation: Carefully read questions to understand what is being asked. Differentiate between questions asking for definitions and those requiring explanations.
- Avoid Ambiguity: Use specific terms instead of vague words like "it" or "they" to ensure clarity in your answers.
