Food chains and webs not only describe the order organisms are eaten, but they also describe the
flow of energy in an ecosystem
importance of the ecosystem
6 of the ecosystem
animals that are all related

Food chains and webs not only describe the order organisms are eaten, but they also describe the flow of energy in an ecosystem. We and all things are made of energy, so the way that energy change forms and pass from one thing to another is one way to describe an ecosystem, and more in general it is a correct way to explain how life on Earth works.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.