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4 Read and answer the questions that follow. Dolphins are intelligent and friendly animals. They live in groups called 'schools' and they can communicate with each other. They use a series of clicking and whistling sounds to announce other dolphins of danger. They can use echolocation to find food and navigate the sea.​

Răspuns :

How are dolphins?

Why dolphins live in groups called "schools"?

What sounds they make when they are in danger?

What do they use to find food and navigate the sea?