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What are invasive alien species? The impact of invasive alien species on their newly colonized environment and the biodiversity of the entire region can have far-reaching consequences, altering ecosystem processes, reducing biodiversity, and threatening the long-term sustainability of ecosystems. Analyse.

Topic: Conservation, environmental pollution and degradation, environmental impact assessment

6. What are invasive alien species? The impact of invasive alien species on their newly colonized environment and the biodiversity of the entire region can have far-reaching consequences, altering ecosystem processes, reducing biodiversity, and threatening the long-term sustainability of ecosystems. Analyse. (250 words)

Difficulty level: Moderate

Reference: Insights on India

Why the question:

The question is part of the static syllabus of General studies paper – 3 and mentioned as part of Mission-2023 Secure timetable.

Key Demand of the question:

To write about the threats posed by invasive alien species and ways to tackle their spread.

Directive word: 

Analyse – When asked to analyse, you must examine methodically the structure or nature of the topic by separating it into component parts and present them in a summary.

Structure of the answer:

Introduction: 

Start by explaining the term invasive alien species.

Body:

First, Explain the various threats posed by them. Provide examples and present the scenario of harm posed by invasive species in India – threaten cultivable land and wildlife habitats alike, may lead to the conversion of marshy wetlands into dry land. E.g.: water hyacinth, spread into the forests through the corridors created by landslides, affect the soil and destroy the microhabitat of that area

Next, Write about the various government policies and programmes in this direction.

Conclusion:

Conclude with solutions to address the issue.