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Sagot :
Answer:
Which organism does not have a digestive system?
Yet over the years — probably many, many millions of years — a large number animals have lost their stomachs. Examples range from the platypus and ghost shark to the lungfish. A team of scientists wanted to probe how such animals evolved to live without these meal digesting organs
Explanation:
Losing your stomach sounds much worse than just losing your lunch. But maybe it’s not.Just don’t lose that stomach fast.
Two things make a true stomach, explains Filipe Castro. (He’s a biologist who studies evolution at the University of Porto in Portugal.) A true stomach can make a very strong acid. That acid helps trigger the breakdown of meals. But a true stomach also releases chemicals called pepsins. Able to work well in very acidic places, these enzymes slice and dice apart proteins in tissues such as meat.
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