Food Web

All energy transformations in an ecosystem begin with

• a scavenger
• the sun
• a decomposer
• a herbivore

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a deer population has significantly increased, the best hypothesis is 

• the deer's main predator has been eliminated
• competition increased
• decreased water levels of local ponds
• organisms that rely on similar food sources migrated to the area

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Which is the smallest level of an ecosystem?

• organsism
• population
• community
• ecosystem

Which relationship describes predator/prey

• hawks and shrubs
• mountain lion and deer
• frogs and trees
• grasses and crickets

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A diagram that shows the amount of energy that moves from one feeding level to another is termed..

• energy pyramid
• adaptation
• autotroph
• food web

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a system of food chains that shows the transfer of energy  is termed

• food web
• food chain
• prey
• predator

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an organism that can produce its own food through photosynthesis

• consumer
• heterotroph
• autotroph
• herbivore

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Biodiversity is 

• the variety of species within an ecosystem
• a large number of the same species in an ecosystem
• an abundant amount of the same primary consumers 
• the ability to have an abundant source from the same species

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an example of producer consumer relationship would be

• lion eating a deer
• grasshopper getting energy from grass
• hawk getting energy from snakes
• earthworm breaking down dead material

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Use the diagram to answer the question.
The Mayfly is a food source for which 3 organisms?

• Frog, Dragon Fly and snake
• Frog, trout and dragon fly
• Frog, salamander and trout
• Frog and phytoplankton

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NGSS.MS-LS2-1