Answer:
A living organism's position in the flow of energy through an ecosystem.
The biology in which we study about the life of marine and what they eat and how they eat..ig thats how i will explain idk
A producer is like grass, then consumers like a zebra will eat the grass, and wen the zebra dies its body breaks down and helps more grass grow. That cycle keeps going over and over, it never ends.
Scientists use fossils to study earth history by identifying the fossil and what era it came from. By knowing what era the fossil came from and what location it was found, scientists can make assumptions about the earth formation at that time.