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The term "epoch" is normally used to define a specific era or period of time in one person's life, which is typically noted by specific important or memorable events.
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process of fossilization , which mineral deposits form internal casts of organisms.
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plants grow taller in generations level because the vascular tissue can transport nutrients throughout the body even when it it necessary to go against gravity.
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They sleep on just one side of their brain at a time
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Dolphins are different from fishes that can breathe underwater.
It is necessary for them to get to the surface of the water at intervals to breathe air.
While sleeping, dolphins allows one hemisphere of their brains fall asleep while the other half is fully conscious. This means that If the left brain is sleeping, the right eye stays open and if the right brain is sleeping, the left eye stays open.
This happens so they always know when it's time to surface and breathe and when to escape when there is trouble.
