All organisms in an ecosystem depend on each other. Food chains show the flow of energy from one organism to another. Food chains show the feeding relationships between organisms. Food webs show how ...

An inherent principle of publication is that others should be able to replicate and build upon the authors' published claims. A condition of publication in a Nature Portfolio journal is that authors ...

To investigate, describe and recall how the strength of the magnetic field close magnetic fieldA region around a magnet or around a wire carrying a current, where a magnetic force is experienced.