60. (a) How does the adaptation called 'migration' help the birds in their survival ? Name one bird and one
mammal which migrate seasonally.
(b) An elephant has a long trunk. How does this adaptation help the elephant to live and survive in the
tropical rainforest ?
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a In migration, the birds or animals move from one place to another in search of food and habitat. If in a particular place the food resources are scarce, they can be taken plentifully through migration. Besides, they also get a safer breeding ground or safer place to live without the fear of being hunted
b Elephant has adapted to the conditions of rainforests in many remarkable ways. It uses its trunk as a nose because of which it has a strong sense of smell. The trunk is also used by it for picking up food. ... So, the elephant is able to handle the competition for food rather well.
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