How Ecosystems Work Quiz

6CO2 + 6H2O + Solar Energy -------------> C6H12O6 + 6O2

• Cellular Respiration
• Photosynthesis
• Decomposition
• Fermentation

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One of the steps in a food chain or food pyramid

• Nutrient cycle
• Energy source
• Trophic level
• Food web

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Which Cycle is displayed

• Water Cycle

• Phosphorus Cycle

• Nitrogen Cycle

• Carbon Cycle

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bacteria that convert atmospheric nitrogen into ammonia

• Nitrogen-consuming bacteria
• Nitrogen-fixing bacteria
• Ammonia-producing fungi
• Photosynthetic algae

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an organism that feeds by breaking down organic matter from dead organisms

• Producer
• Decomposer
• Herbivore
• Carnivore

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What is the difference between a producer and a consumer?

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What is the difference between a food chain and food web?

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Communities of bacteria have been found living thousands of feet underwater. Which of the following statements is a proper conclusion to draw about these bacteria?

• These bacteria are harmful to humans.
• These bacteria require sunlight to survive.
• These bacteria are found only in freshwater.
• These bacteria use an energy source other than sunlight

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Which of the following pairs of organisms probably belong to the same trophic level?

• Rabbit and Deer
• Eagle and Sparrow
• Lion and Zebra
• Shark and Dolphin

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From producers to secondary consumers, about what precent of energy is lost?

• 90%
• 50%
• 75%
• 30%

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