An artificial ecosystem is represented by?

An artificial ecosystem is represented by human-made environments that replicate natural ecosystems to some extent. These can include:

1. Aquariums: Controlled aquatic environments where fish, plants, and other aquatic organisms live in an artificial ecosystem maintained by humans.

2. Terrariums: Enclosed environments for plants and sometimes small animals like reptiles or amphibians, mimicking terrestrial ecosystems.

3. Bioreactors: Systems used in biotechnology and environmental engineering to cultivate microorganisms or plants under controlled conditions for specific purposes, such as wastewater treatment or biofuel production.

4. Greenhouses: Controlled environments for growing plants, where temperature, humidity, light, and other conditions are regulated to optimize plant growth.

5. Closed Ecological Systems: Experimental setups designed to simulate entire ecosystems in a closed environment, often used for research or space exploration purposes.

These artificial ecosystems are designed and managed by humans to study ecological processes, conserve species, grow crops, or provide aesthetic enjoyment. They differ from natural ecosystems in that they are highly controlled and often have artificial inputs (like food or filtration in aquariums) to sustain the organisms within them.