Ecosystems and Food Webs

All energy on Earth ultimately comes from what source?

• Water
• Sun
• Consumers
• Oxygen

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The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

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An organism that uses sunlight to create its own food is known as a:

• Producer
• Heterotroph
• Consumer
• Decomposer

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Why might an organism have more than one arrow coming from them in a food web?

• More than one organism may eat them. 
• They may eat more than one other organism. 
• This organism gets its energy from multiple sources. 
• They have no resources available to them.

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This organism recycles nutrients back into the soil when it breaks down dead stuff

• producers
• consumers
• decomposers

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Earthworms help break down plant and animal remains and return the nutrients back into the soil. What are earthworms?

• consumers
• decomposers
• producers
• predators

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Which organism is the producer?

• small fish
• penguin
• algae/seaweed
• killer whale

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An organism that lives by breaking apart dead organic matter into simpler parts is...

• scavenger
• consumer
• decomposer
• carnivore

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What is this called?

• Food Web
• Food Chain
• Abiotic Factors

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A group of organisms of the same species living in the same area are called a/an ________.

• community
• habitat
• population
• ecosystem