Which of these is an example of an ecosystem: a pond, or the Sahara Desert?both of theseonly the Sahara Desertonly the pond

To determine which of the options is an example of an ecosystem, let's first understand the definition of an ecosystem. An ecosystem is a community of living organisms interacting with one another and their physical environment. Given that both options involve living organisms and their habitats, we can analyze them in this context.

1. Pond: A pond contains water, plants, animals, and microorganisms that interact with each other and their environment. This makes it a clear example of an ecosystem.

2. Sahara Desert: The Sahara Desert, despite being predominantly arid and featuring extreme conditions, still hosts various forms of life, such as plants and animals adapted to its environment. It operates as an ecosystem by supporting these interactions.

Based on the above analysis, both a pond and the Sahara Desert qualify as ecosystems since they both involve interactions among living organisms and their environments.

Final Answer

Both of these (the pond and the Sahara Desert) are examples of ecosystems.