Different materials are cycled in the environment in separate biogeochemical cycles. Human activities affect these cycles.
ActivitySet up a human-made ecosystem.
An aquarium is a human-made ecosystem. It can be set-up as follows :
Requirements: A large jar, water, oxygen pump, fish food.
Procedure:
- Take a cubical glass vessel or a large jar.
- Fit an oxygen pump (aerator) to supply oxygen to the system.
- Fill the vessel or jar with water upto 90%.
- Add a few aquatic plants and fish into the vessel.
- The aquarium is ready. It is an example of a human-made ecosystem.
Clean the aquarium once in a week to keep it running.
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