Question

I speak without a mouth and hear without ears. I have no body, but I come alive with wind.

What am I? ​

Answer 1

Answer:

$an \: echo$

The answer to the above riddle is, "An echo." An echo is a reflection of your own voice. Which is why an echo can 'speak without a mouth and hear without ears'. However, an echo is only heard when the wind conditions are optimal, so it 'comes alive with the wind

Answer 2

Question:-

I speak without a mouth and hear without ears. I have no body, but I come alive with wind.

What am I? 

Answer:-

An echo speaks without a mouth and hears without ears. It comes alive with wind. Hence, 'An echo' is the required answer to this riddle.