The diatoms have dealt with the decrease in size with each generation by producing a smaller half that fits within the external shell. This allows the diatoms to maintain their size and continue to function properly.
The diatoms are able to do this because they have an external shell that is made of silica. The silica helps to keep the diatoms' size and also helps to protect them from predators. The diatoms use the silica to keep their size and also to keep predators away.
A diatom is a type of algae that is encased in a hard shell of silicon dioxide. These single-celled organisms are found in fresh and salt water, as well as in soil. Although they are microscopic, diatoms are an important food source for many aquatic animals. They are also used in the production of toothpaste, beer, and other products.
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