Problem: The surface of the lake is littered with floating vegetation, yet there is no apparent rotting or swarm of flies. As odd rust color exists. No decomposers seem to be present of any kind. While walking around the lake, you find a rat, cold and lifeless, but not decaying. It too seemed to simply lay down and die. What is happening based upon your current understanding of systems? Why? include intext citation and reference. Need Assignment Help?