What organisms are considered to be benthos?

Benthos are the flora and fauna found on the bottom, or in the bottom sediments, of a sea, lake, or other body of water.

Explanation:

So benthos would be considered multicellular organisms since they are plants and can produce its own food and take its own food from other resources.

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explanation:

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before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.