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    Answer 6 questions correctly in a row.

A food chain is a model that shows how the matter eaten by organisms moves through an ecosystem. Below is a food chain from a grassland ecosystem in Wyoming.
slender wheatgrass
common shrew
long-tailed weasel
great horned owl
Use the information in the food chain to fill in the blank below.
slender wheatgrass
common shrew
long-tailed weasel
great horned owl
Matter first enters this food chain when the 
 makes its own food using photosynthesis.
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