If we removed the wolf, snake, and hawk from this food web, the number of grasshoppers and squirrels would increase.
All the food networks in a single ecosystem make up a food web. Each organism in an ecosystem is a link in a number of food chains. Energy and nutrients can go along different food chains as they move through the ecosystem. A food web is made up of all the linked and overlapping food systems in an ecosystem.
The trophic levels are divisions into which organisms in food webs are categorized. These levels can be roughly categorized as producers (first trophic level), consumers, and decomposers (last trophic level).
Example of producer-plants
Consumers-Primary consumer-example:squirrel and grasshopper
Secondary consumer-example:wolf
Decomposers-example:worm
Hence,the removal of secondary consumer leads to increase in number of primary consumers.
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