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What are the various natural and human-caused factors contributing to the rise in global sea levels? Analyse their potential long-term impacts on coastal communities and ecosystems.

Topic: geographical features and their location-changes in critical geographical features (including water-bodies and ice-caps) and in flora and fauna and the effects of such changes.

1. What are the various natural and human-caused factors contributing to the rise in global sea levels? Analyse their potential long-term impacts on coastal communities and ecosystems. (250 words)

Difficulty level: Moderate

Reference: The HindiInsights on India

Why the question:

The World Meteorological Organization (WMO) has found in a new report that the world’s sea level is rising at an unprecedented rate, portending potentially disastrous consequences for the weather, agriculture, the extant groundwater crisis, and social disparities.

Key Demand of the question:

To write about the causes and impact of sea level rise.

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: 

Begin by giving statistic regarding the rise of sea level due to global warming.

Body:

First, write about the various natural and man-made causes for rise sea level – thermal expansion of seawater, melting of glaciers and ice caps, loss of ice shelves and ice sheets, and land subsidence.

Next, write about its impact – coastal erosion, flooding, saltwater intrusion, damage to crops and biodiversity, and displacement of people.

Next, write about the steps that are needed to mitigate the impact.

Conclusion:

Conclude with a way forward.