How does a pond form?

A mudflow blocks a river.
Water collects in a low-lying area.
Humans use a dam to create a reservoir.
A depression made by an ice sheet fills with water.

Body systems are not completely independent they integrate and work together describe one example of the integration between body systems

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Which animal is a producer in this ecosystem