What components of a food web or food chain did you observe?

Ecosystem Paper
Observe an ecosystem, either in your backyard, a natural area within a city, a park, or another place outdoors. Take note of plant and animal life (that includes looking for traces of animals such as scat, hair, footprints, etc.). Then write a 1-2 page paper that includes the following listed points. It is required that you apply information from your reading and research in your ecosystem description with support from a minimum of two sources.
Describe the location you chose to observe and discuss the abiotic factors that influence the ecosystem.
What components of a food web or food chain did you observe?
What populations did you observe (or have observed) in the ecosystem?
Describe the community or communities that exist.
What interactions did you observe or might exist within the ecosystem: Provide specific examples for the following interactions:
symbiosis (parasitism, mutualism, commensalism)
predation
competition