Science Detective Written Response Q

10. Create an ecosystem in an aquarium. Describe the abiotic and biotic factors you would include. Describe the niche of at least two different species.
If I could create and design an aquarium, I would include many abiotic and biotic factors. First of all, the aquarium would need abiotic factors. One abiotic factor I would include is water. An aquarium needs water; otherwise how would the animals in it survive? Another abiotic factor I would include is rocks. That way, the bottom and sides of the aquarium would be like a marine animal's actual habitat, not some cage. The animals would react normally that way. The final abiotic factor would be sunlight. There would need to be sunlight to facilitate plant growth and to make sure the animals could see. The other thing aquariums need is biotic factors. For my aquarium, the first biotic factor I would include is fish. Fishes' niche in the ecosystem is to get eaten by predators like sharks and to eat smaller fish, seaweed, and plankton. They are a big part of any marine ecosystem. I would also add sharks as a biotic factor. They are a natural predator. Their niche is to eat fish and to get eaten by humans and other sharks. This would regulate amounts of fish. The final biotic factor I would include is seaweed. This is a food source for fish for which small fish won't be enough. Small fish can also eat the seaweed. In conclusion, my aquarium would have both abiotic and biotic factors, as they are both important in the ecosystem.

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