Relationships in Ecosystems

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What is an ecosystem?

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An ecosystem is how all the living and nonliving things in an area interact.

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What are nutrients?

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Nutrients are substances that provide materials necessary for growth and the maintenance of life.

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What is competition in an ecosystem?

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Competition occurs when two or more organisms vie for the same resources, such as food, space, or mates.

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What is parasitism?

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Parasitism is a relationship where one organism benefits at the expense of another, such as a flea living on a dog.

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What is the relationship between predator and prey?

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Predators are animals that hunt and eat other animals (prey). Their population sizes are not equal; typically, there are more prey than predators.

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What is symbiosis?

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Symbiosis is a close relationship between two different species, which can be beneficial, neutral, or harmful.

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What is a food web?

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A food web is a complex network of feeding relationships among organisms in an ecosystem.

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What is a producer?

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A producer is an organism that can make its own food, usually through photosynthesis, like plants.

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What is a consumer?

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A consumer is an organism that eats other organisms for energy, such as animals.

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What is a decomposer?

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A decomposer is an organism that breaks down dead material and recycles nutrients back into the ecosystem.

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