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Ecosystems and Interactions of Living Things
Oxygen
Oxygen definition: The gas found in air and water that most plants and animals need to live.
Related Terms
Carnivore
Community
Consumer
Decomposer
Ecosystem
Endangered
Energy Pyramid
Environment
Food Chain
Food Web
Habitat
Herbivore
Microorganism
Niche
Omnivore
Photosynthesis
Pollution
Population
Predator
Prey
Producer
Seed Dispersal
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