Which factor would have the greatest effect on the flow of energy in an ecosystem?

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

Which technology do environmental scientists use to track the movements or polar bears and other vulnerable populations? a) geographic information system(gis) b)environmental dna(edna) surveillance c) global positioning system(gps) d) unmanned aerial system (uas)

In what ways does a sanitary landfill differ from an open air landfill?