TEST 1 I. READING Read the text and mark the correct variant (A-C) to complete the sentences (1-4). TALK TO THE ANIMALS Only humans spèak using words. But all species in the animal kingdom can communicate in one way or another. Maybe you have heard about...
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TEST 1 I. READING Read the text and mark the correct variant (A-C) to complete the sentences (1-4). TALK TO THE ANIMALS Only humans spèak using words. But all species in the animal kingdom can communicate in one way or another. Maybe you have heard about the way bees dance around to send messages to each other and thé waydogs bark in different ways to give warnings, to be friendly or to be playful. But did you know about infrasonic communication used by elephants? This is how it works. Humans hear low sounds like the bass notes in music or thunder rumbling in the sky. But we don’t hear sounds lower than these. However, animals such as elephants and hippos can hear much lower sounds than humans can.-And what’s more, they can make sounds in that range as well, and they use them to communicate with each other. This is known as infrasound. Another amazing thing about infrasound is that it trairëls over several kilométrés. Sounds which have a higher pitch, like the ones people can hear, don
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