Which Environment and Ecology term is correctly identified by “a pond, forest or grassland can be studied as an ecosystem” and “a functional unit of organisms and their physical environment”?

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 a functional unit of organisms and their physical environment. 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 a linear sequence showing transfer of food energy. • 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. Exam Takeaway: Connect Ecosystem with “a pond, forest or grassland can be studied as an ecosystem” and “a functional unit of organisms and their physical environment”.