How can changes in a food chain be predicted??

Food chains are models that show how organisms in an ecosystem can get their food. You can use a food chain to predict how populations of organisms will affect one another.

Abiotic factors such as latitude and temperature can impact biotic aspects of food web structure like the number of species, the number of links, as well as the proportion of basal or top species. These biotics factors can in turn influence network-structural aspects like connectance, omnivory levels or trophic level.

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the answer is c) an oak tree