1) what do we understand with term MAMMALS & AMPHIBIANS?

2) local time of longitude is 82.. is known as INDIAN STANDARD TIME. why it so?
3) What will happen  if tiger vanishes from our forest?

Mammals are the group of animals that give live birth to the young ones and feed them by milk. For example, man, cow etc.
Amphibians are the group of animals that live on both land and in water. For example, Frog, crocodile etc.

Kindly ask rest of the questions in separate threads each.

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