Question

(1) Migration of birds to Chilika Lake has decreased over
years.
(ii) Birds migrate to Chilika Lake during summer
(iii) Pesticides and chemicals in fields affect the migration of
birds,
(iv) Birds are encouraged to migrate to Lake Chilika.
A2. Give a list of the places and birds related with migration 2
A3. Give reasons : Migration is essential for the birds.
A4. According to you, why are sanctuaries essential for birds
and animals?
2
A5. Language study (Do as directed):
(i) The birds have taken shelter in artificial mounds. (Frame a
'Wh'-question to get the underlined part as its answer)
(ii) The birds arrive at their winter abode inside the bird​

Answer 1

Explanation:

A2 . Siberian Cranes are snowy white colour birds

A3 . Migratory birds fly hundreds and thousands of kilometres to find the best ecological conditions and habitats for feeding, breeding and raising their young.

A4 . The wildlife sanctuaries are established to protect the endangered species. 

Answer 2

(1) Migration of birds to Chilika Lake has decreased over