It is better to breathe
through the nose than through the mouth...
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The nose performs two very important functions when you breathe
in. It warms the air and cleans it. The air is warmed by passing
over the many small blood vessels that lie close to the surface within
the nose. It is cleaned by passing through tiny hairs and over slimy
mucus that is produced by special glands. This mucus also helps
kill germs. |
Which is the biggest eater
in the animal kingdom? |
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In terms of sheer bulk, the blue whale must take the prize. Every time
it takes a mouthful of shrimp - like krill ( mass of tiny shellfish ), it |
swallows literally
thousands upon thousands of individuals. When full, the blue whale's
stomach can hold as much as 2.5 tonnes of krill. |
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