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:

i dont know but

explanation:

whoever your teacher is, deserves a raise for using pokemon as an example

it becomes positively charged by charging it