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Transcript of Lesson 2
Relationships in Ecosystems
African jacana birds spend hours picking small insects and ticks off the backs of hippos. How does this relationship help both organisms to survive?
A limiting factor is any resource that restricts the growth of a population.
The carrying capacity is the greatest number of individuals within a population that an ecosystem can support.
How do organisms avoid competition?
A habitat is the physical place where an organism lives and hunts for food.
A niche is the special role that an organism plays in a community.
Mutualism-both organisms benefit.
commensalism-one organism benefits without harming the other
Three way organisms benefit from interactions
Parasitism-one organism benefits and the other is harmed