Question

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. use the information in the food chain to fill in the blank below. slender wheatgrass yellow - pine chipmunk long - tailed weasel red fox matter first enters this food chain when the makes its own food using photosynthesis.

Explanation:

In a food chain, producers (usually plants) are the first to introduce matter by making their own food via photosynthesis. Among the given organisms, slender wheatgrass is a plant (producer), while the others are consumers. So matter first enters when slender wheatgrass performs photosynthesis.

Answer:

slender wheatgrass