NCERT Solution For Class 11 English (Hornbill) – Summarizing

NCERT Solutions for Class 11 English

NCERT Solutions offer a broad variety of definitions and introduction to the topic for Class 11 English, which includes all the questions provided in the NCERT books.

NCERT Solution For Class 11 English (Hornbill) – Summarizing
NCERT Solution For Class 11 English (Hornbill) – Summarizing


NCERT Solutions of the 11th Std English has been provided to ace up your preparation. Access and use the direct links available for Chapterwise Class 11 NCERT Solutions whenever you want. The detailed approach used to explain the NCERT Solutions of the 11th Std English makes it easy for you to understand the concepts behind them.

NCERT Solution For Class 11 English – Summarizing provides us with all-inclusive information on all concepts. As students would have to learn the basics about the subject in class 11, this curriculum for class 11 is a comprehensive study material, which explains the concepts in a great way.

Question 1:

Read the text below and summarise it.

Green Sahara

The Great Desert Where Hippos Once Wallowed

The Sahara sets a standard for dry land. It’s the world’s largest desert. Relative humidity can drop into the low single digits. There are places where it rains only about once a century. There are people who reach the end of their lives without ever seeing water come from the sky.

Yet beneath the Sahara are vast aquifers of fresh water, enough liquid to fill a small sea. It is fossil water, a treasure laid down in prehistoric times, some of it possibly a million years old. Just 6,000 years ago, the Sahara was a much different place.

It was green. Prehistoric rock art in the Sahara shows something surprising: hippopotamuses, which need year-round water.

“We don’t have much evidence of a tropical paradise out there, but we had something perfectly liveable,” says Jennifer Smith, a geologist at Washington University in St Louis.

The green Sahara was the product of the migration of the paleo-monsoon. In the same way that ice ages come and go, so too do monsoons migrate north and south. The dynamics of earth’s motion are responsible. The tilt of the earth’s axis varies in a regular cycle — sometimes the planet is more tilted towards the sun, sometimes less so. The axis also wobbles like a spinning top. The date of the earth’s perihelion — its closest approach to the sun — varies in cycle as well.

At times when the Northern Hemisphere tilts sharply towards the sun and the planet makes its closest approach, the increased blast of sunlight during the north’s summer months can cause the African monsoon (which currently occurs between the Equator and roughly 17°N latitude) to shift to the north as it did 10,000 years ago, inundating North Africa.

Around 5,000 years ago the monsoon shifted dramatically southward again. The prehistoric inhabitants of the Sahara discovered that their relatively green surroundings were undergoing something worse than a drought (and perhaps they migrated towards the Nile Valley, where Egyptian culture began to flourish at around the same time).

“We’re learning, and only in recent years, that some climate changes in the past have been as rapid as anything underway today,” says Robert Giegengack, a University of Pennsylvania geologist.

As the land dried out and vegetation decreased, the soil lost its ability to hold water when it did rain. Fewer clouds formed from evaporation. When it rained, the water washed away and evaporated quickly. There was a kind of runaway drying effect. By 4,000 years ago the Sahara had become what it is today.

No one knows how human-driven climate change may alter the Sahara in the future. It’s something scientists can ponder while sipping bottled fossil water pumped from underground.

“It’s the best water in Egypt,” Giegengack said — clean, refreshing mineral water. If you want to drink something good, try the ancient buried treasure of the Sahara.

Staff Writer, Washington Post


Sahara is the world’s largest desert. Yet beneath its surface could be found vast aquifers of fresh water. The basis of the huge ‘buried treasure’ of water was laid down in prehistoric times. The water found is clean and refreshing.
6000 years ago, Sahara was quite a different place. It was full of greenery and water. Prehistoric rock-art of Sahara indicates the presence of hippopotamuses which need water round the year. Migration of Paleo-monsoon to the Sahara region led to its wet and rainy climatic conditions.
Later, around 5000 years ago, the monsoon shifted towards south, leaving Sahara in a state of drought. This led the inhabitants to migrate to the Nile Valley. The shift in the earth’s axis and decreased precipitation left the place dried out. Consequently, the soil lost its ability to hold water and vegetation decreased. For the past 4000 years Sahara has remained the same.


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NCERT Solutions For Class 11 English

(Hornbill – Writing Skills)

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