Journey to the end of the Earth (Tishani Doshi) — NCERT Solutions

In the Antarctic context, the statement means that small changes in the environment can lead to large consequences. Antarctica has a simple ecosystem, so even a slight change, such as depletion of the ozone layer, can affect phytoplankton. Since phytoplankton support the entire Southern Ocean food chain and influence the global carbon cycle, damage to these tiny organisms can have a wide impact on marine life and the planet. Thus, we must protect the small components of the environment to safeguard the larger system.

Antarctica is the place to go to understand the Earth’s past, present and future because it is a pristine continent with no human population, and its ice cores preserve ancient carbon records. It also shows the effects of climate change very clearly through retreating glaciers and collapsing ice shelves. Its history goes back to Gondwana, so studying it helps us understand the Earth’s geological past, current environmental changes, and possible future outcomes.