Even an animal as big as a whale couldn't produce them.
These animals can both produce red light and detect it when other organisms can't.
The smaller animals, in turn, can produce and hear shriller sounds.
How do you suppose an animal of his size can produce all that noise?
By moving its wings, the animal can produce lift and get off the ground.
Why do these animals produce this amazing variety of sounds?
But do not a few other animals also produce aspects of their environment as well?
We should add that animals and farm produce are no longer allowed on public transport.
A young animal which is suffering will not produce quality meat.
Certain animals can produce sounds at frequencies which the human ear cannot hear.
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