Within an ecosystem, $$ interact among themselves and with the physical environment.

The $q,$ components of the ecosystem are the nonliving things, which include the atmosphere, $q,$ and soil.

$q,$

The living components of an ecosystem are categorized based upon

$q,-$

$q,,$ also called producers, require only $q,$ and an external energy source to produce food.

Producers include photosynthetic plants and $q,$ bacteria, which provide nutrients for themselves and other members of a community.

$q,,$ also called consumers, require preformed soutres of organic nutrients.

Consumers include herbivores, carnivores, omnivores, and $$ organisms that feed on detritus.