How were the island of japan formed

The island of Japan are the result of several large ocean movements occuring over hundreds of millions of years from the mid-silurian to the Pleistocene as a result of the subduction of the philippene sea plate beneath the continental amurian plate.

A complex food web is better than the simple food chain because the food web links together the relationships between a producer, consumer, and decomposer [unlike the use of a simple food chain]. A food chain just shows the animal all the way to the source of what it eats, and what the food is made of.