Examlex
Explain how hepcidin controls the level of plasma iron.
Biotic Factors
Components of an ecosystem that are living, including plants, animals, and microorganisms.
Abiotic Factors
Non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
Ecosystem
A biological community of interacting organisms and their physical environment.
Primary Consumers
Organisms that feed on primary producers; they are usually herbivores that eat plants and algae.
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