Although earthquakes often occur before a volcanic eruption, they are not the cause. The earthquakes are the result of magma (molten rock) moving underground leading up to an eruption. A few volcanic eruptions are thought to have been triggered or initiated by earthquakes, but this is not the typical case.
The part of the worm that serves as its brain is the cerebral ganglion
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D would be the answer tomthis
<span>And algal bloom occurs
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