Questions: A bog occurs when the water at the surface level is low in nutrients and acidic. Plants found in bogs include sphagnum moss, evergreen shrubs, and sedges. Common animals include beavers and shorebirds. A bog is an example of a(n) : A. biosphere. B. species. C. ecosystem. D. habitat

The answer is C: ecosystem.

Explanation for each option: A. Biosphere: The biosphere refers to the global sum of all ecosystems, including all living beings and their relationships with the lithosphere, hydrosphere, and atmosphere. A bog is a much smaller, specific area and does not encompass the entire biosphere. B. Species: A species is a group of organisms that can interbreed and produce fertile offspring. A bog includes multiple species of plants and animals, not just one. C. Ecosystem: An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. A bog fits this definition as it includes various plants, animals, and the physical environment they interact with. D. Habitat: A habitat is the natural environment in which a particular species lives. While a bog can be a habitat for certain species, the term "ecosystem" more accurately describes the complex interactions between the living and nonliving components in a bog.

Summary: A bog is an example of an ecosystem because it includes a community of living organisms (plants and animals) and their interactions with the nonliving environment (water, soil, etc.).