What generally flows in one direction through an ecosystem, from producers up through each level of consumers, and is not recycled? a. energy b. sunlight c. carbon d. water

### a. energy

## Step1: Identify the concept### Determine what flows in one direction through an ecosystem, from producers to consumers.## Step2: Understand the flow### Recognize that this flow is not recycled and moves from one level to the next.## Step3: Match with the correct option### Compare the options to find the one that fits the description of flowing in one direction and not being recycled.