Just like plants on land, ocean-going plankton need light from the sun to prosper and grow. But light is absorbed by ocean water, and some colors of light are absorbed more readily than others.That's why nearly all photosynthesis in the ocean takes place in the sunlit upper layers.
According to the equation the correct answer with the interval registered in minutes is: C 8=0.00146 (distance to epicentre) <=> distance to epicentre=8÷0.00146 <=>5479,45 km
