Science, asked by kdelip199, 2 months ago

assa
Section - A Reading
The water of the river Yamuna in Delhi has become useless the water of the river of the
most polluted and has received E grade in term of quality. This is the lowest
grade which
indicates the severity of pollution in the water. some fifty years ago
the water of the Yamuna
was clear and clean many water plants such as weeds algae and shrubs grew in its water or
along the bank of the river. These plants were the main source of food of aquatic creatures.
A number of water birds could be seen along the river with the onset of winter thousands of
migratory birds would come here to deed in the Yamuna water, sadly these water species and
birds have vanished or died what on finds now are red worms called Cheronumids which
live in the most unhygienic and polluted water.
Questions:-
(a)
Which grade has the water of Yamuna river received in terms of quality? {2}
(b) How was the water of Yamuna some fifty years ago?
{2)
(c) Name some water plants which grew in its water?
{2}
(d) what are chironomids?
{2}
(e) complete the following:
{1+1=2)
(i) These plants were the main source
These plants species and birds
(1) Use the following words in your own sentences to make their meaning clear. {1x5=5}
Useless
(ii) Vanished
CR Witing​

Answers

Answered by shreyash1741
1

Answer:

(i) The water of river Yamuna is very much polluted and has received 'E' grade in terms of qualities. This is the lowest grade which indicates the severity of the river Yamuna.  (ii) The narrator is talking about water plant such as weeds, shrubs and algae which grew in its water or along the bank of the river. These plants were the main source of food for aquatic creatures.   (iii) The migrate bird came near the river Yamuna to feed themselves.  (iv) Red worms which are also known as chironomids which live in the most unhygienic and polluted water are found in the river Yamuna. Read more on Sarthaks.com - https://www.sarthaks.com/250383/the-water-of-river-yamuna-in-delhi-has-become-useless-the-water-of-this-river-most-polluted

Explanation:

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