In Environment and Ecology, which term combines the facts “biotic and abiotic components interact within it” and “a pond, forest or grassland can be studied as an ecosystem”?

Correct Answer: Option D — Ecosystem. Ecosystem is correct because it is a pond, forest or grassland can be studied as an ecosystem. Ecosystem is also specifically associated with biotic and abiotic components interact within it. Two additional identifying facts are that Ecosystem is energy flows while nutrients cycle through the system and Ecosystem is associated with a pond, forest or grassland can be studied as an ecosystem. Why the other options are incorrect: • Option A — Food Chain: Food Chain is interconnected food chains form a food web. It is incorrect here because its separate identifying association is producers form the base of most grazing food chains. • Option B — Biodiversity Hotspot: Biodiversity Hotspot is a hotspot is not simply any place with many species. • Option C — Wetland: Wetland is the Ramsar Convention provides an international wetland framework. It is incorrect here because its separate identifying association is marshes, floodplains, lakeshores and mangrove areas can be wetlands. Exam Takeaway: Connect Ecosystem with “a pond, forest or grassland can be studied as an ecosystem” and “biotic and abiotic components interact within it”.