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Answer:
I believe it's c I could be wrong but I'm pretty sure
Ecosystems need producers because they are the start of the food chain.
Producers are consumed by first consumers, the second consumers and so on.
Answer: Food groups were coded by stripes in widths corresponding to the recommended servings from each group. All the stripes tapered toward the top of the pyramid to remind people that each food group includes both healthy and unhealthy choices, such as foods with added sugar or “solid” fat.
Explanation: