LS2+(9-11)+-+4

4a diagramming __the energy flow in an ecosystem that compares the energy at different trophic levels.__ (e.g. What inferences can you make about energy “loss”& use?). 4b explaining __how the chemical elements and compounds that make up living things pass through food webs and are combined and recombined in different ways __(e.g. nitrogen, carbon cycles, O2, & H2O cycles).
 * Students demonstrate an understanding of matter and energy flow in an ecosystem by …**