A ribosomes function is to produce proteins, so if the organelle(part of a cell) that makes proteins stops working then the cell doesnt produce proteins. It is a ribosome malfunction
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I can help but where is the choices lol?
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For example, if the seeds that the bird needs to eat is bigger, over time it will adapt to get a bigger beak to eat the bigger seed. The birds that have adapted reproduce and soon more and more birds that have a bigger beak for the bigger seed are more common. If the type of food available changes than the bird will most likely adapt to eat that food.
2nd one is the right answer