Food Chains, Food Webs, Energy Pyramid and Cycles

The movement and exchange of living and nonliving matter back into the production of living matter

• Food webs

• Ecological recycling

• Consumers

• Nutrients

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An organism that makes complex, energy-containing biomolecules from simple inorganic molecules using energy captured from light or inorganic chemical compounds

• Terrestrial

• Producers

• Cycle of matter

• Food webs

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How are food webs related to food chains?

• food webs consist of overlapping food chains

• food chains occur on land whereas food chains occur in water

• food chains are made up of individual food webs

• food chains produce energy for food webs

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NGSS.MS-LS2-3

Why is the base of an energy pyramid larger than the top?

• organisms at the top producer energy for organisms at the bottom.

• . Energy is converted into matter to form larger organisms at the top

• Energy is lost as heat at each level so less energy is available at the top

• Organisms at the top use less energy than organisms at the bottom.

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NGSS.MS-LS1-6

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In these food chains, the arrows represent what?

• The flow of energy

• the cycle of matter

• the animals are moving

• the arrows don't mean anyhing

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What do all food chains have in common?

• They are all made up of the same organisms in different orders

• They all produce and use the same amount of energy.

• They all have more consumers than producers.

• They all begin with a producer.

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What does a food web show?

• Energy is lost between levels in an ecosystem.

• Consumers eat more than one kind of food.

• Energy goes all different directions in an ecosystem.

• Energy in a food web always flows towards decomposers

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NGSS.MS-LS2-3

Look at the key in the top right corner of the above diagram. Label all three arrows with the name of the matter that each one represents. Be sure to analyze the direction of the arrows in the diagram.

• The grey arrow is carbon dioxide, the purple arrow is oxygen and the brown arrow is carbon.

• The grey arrow is oxygen, the purple arrow is carbon dioxide and the brown arrow is carbon.

• The grey arrow is carbon, the purple arrow is oxygen and the brown arrow is carbon dioxide.

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NGSS.MS-LS1-6

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The rabbit in the diagram above is which kind of organism.

• decomposer

• producer

• consumer

• none of the above

Since humans can eat foods from many different ecosystems, they are....

• considered to be producers

• part of a simple food chain

• not counted as consumers

• part of many food webs