Why are food webs better representations of how energy moves through an ecosystem than food chains? 1. Food chains show how matter moves through an ecosystem, not energy.

2. Food webs show that animals in an ecosystem can get energy by eating different things.

3. Food chains include decomposers, which do not play a role in energy movement through an ecosystem.

4. Food webs include how energy enters an ecosystem, and food chains don't.

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.