All ecosystems need
and
in order to survive.

An ecosystem is a community of living things and their non-living environment, and may be as large as a desert or as small as a puddle. An ecosystem must contain producers, consumers, decomposers, and dead and inorganic matter. All ecosystems require energy from an external source – this is usually the sun.

Explanation:

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.