How does eating contribute to the flow of energy in an ecosystem?

The correct answer is-

Flow of energy in an ecosystem ( a large community of life forms that interact with each other as well as their physical environment in a particular area) takes place through food chain.

A food chain is a linear network of different organisms ( occupying different trophic levels) where organisms at one trophic level consumes organisms at previous trophic level and energy flow takes place in the form of organic matter.

Producers ( such plants) prepare their own food through photosynthesis and occupy the first trophic level.

Producers are eaten by primary consumers ( which are generally herbivores such as rabbits).

Primary consumers are eaten by secondary consumers, which are then eaten by tertiary consumers that are eaten by final consumers and then decomposers ( such as Fungi).

Example- Grass → Grasshopper → Frog→ Snake → Hawk → Fungi

c.

explanation:

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.