Class 12 English Chapter 18 Journey to the end of the Earth Question Answer to each chapter is provided in the list so that you can easily browse through different chapters Assam Board Class 12 English Chapter 18 Journey to the end of the Earth and select needs one.
Class 12 English Chapter 18 Journey to the end of the Earth
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Journey to the end of the Earth
Lesson – 18
VISTAS (SUPPLEMENTARY)
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Page No – 19
1. How do geological phenomena help us to know about the history of humankind?
Ans: The geological process that led to the separation of continents and water bodies from a single landmass provides insight into the age of human existence on Earth. Around 650 million years ago, humans did not exist, as the environment was not suitable for their survival. Following the extinction of dinosaurs, mammals began to thrive, and with the gradual separation of landmasses, the human race eventually emerged and flourished on Earth.
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Page No – 20
1. What are the indications for the future of humankind?
Ans: As civilization has advanced, pollution and environmental degradation have continuously increased. Carbon emissions have multiplied, contributing to global warming and the greenhouse effect. These factors have caused glaciers to melt, leading to the loss of flora and fauna. Harmful gases have also depleted the ozone layer, allowing UV rays to penetrate the atmosphere. These environmental issues not only threaten plant and animal life but also pose a serious risk to humanity’s survival. Antarctica has issued alarming warnings, highlighting the severe damage being inflicted on the planet, which could ultimately lead to catastrophic consequences for all life forms.
| READING WITH INSIGHT |
1. ‘The world’s geological history is trapped in Antarctica.’ How is the study of this region useful to us?
Ans: Antarctica was once part of the supercontinent Gondwana but later separated from India and drifted southward, forming the present-day continent. Over time, its climate shifted from warm and humid to extremely cold and frigid. As a result, Antarctica holds a rich history and serves as a valuable site for archaeological studies. It offers a rare opportunity to witness the past, present, and future coexisting in a pure and unaltered form. The deep layers of ice preserve secrets of life, providing crucial insights into Earth’s history. Additionally, Antarctica serves as a warning, highlighting the severe consequences of environmental damage. It stands as a stark reminder that global warming is a real threat with potentially catastrophic effects.
2. What are Geoff Green’s reasons for including high school students in the Students on Ice expedition?
Ans: Geoff Green has solid reasons why he includes the highschool students in his mission. He realises that our elderly people could not do anything to save the world. But the students of the future of the world. Their proper knowledge of the world will help them to take positive steps towards the safety of the degrading environments. Going to the end of the earth they can understand, learn and realise the danger of the global warming ozone layer ‘s degradation and biodiversity problem.
Such an expedition will, he expects, increase awareness about the environment of the world. They can realise the real danger by seeing the ice caps retreating and collapsing due to global warming.
3. ‘Take care of the small things and the big things will take care of themselves.’ What is the relevance of this statement in the context of the Antarctic environment?
Ans: This statement holds significant relevance in the context of Antarctica’s environment, where even a small change can lead to drastic consequences. Antarctica has limited biodiversity, making it highly sensitive to environmental shifts. A key example is phytoplankton, tiny marine plants that undergo photosynthesis and serve as a crucial food source for numerous marine birds and animals. The author emphasizes that further depletion of the ozone layer could negatively impact phytoplankton, disrupting the carbon cycle and threatening the survival of marine life. By ensuring that the natural processes carried out by these microscopic organisms continue unhindered, the stability of larger marine animals and birds will naturally be maintained.
4. Why is Antarctica the place to go to, to understand the earth’s present, past and future?
Ans:Antarctica provides a glimpse into how Earth existed millions of years ago and how it gradually divided into separate landmasses. The melting and collision of ice masses offer valuable insights into the potential future of our planet if human interference with nature continues. Additionally, Antarctica’s deep ice layers preserve carbon records dating back half a million years, helping scientists understand Earth’s past, present, and future. Thus, Antarctica serves as a time capsule, unveiling our history, reflecting our present, and foreseeing our future.
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