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- 1. Multiple Choice
What does the photograph of the anaerobic digester silos and its caption help the reader understand?
Microbes are used to make methane.
Methane is held in containers so it won’t escape.
Farms benefit from the extra food from stores.
Methane is converted into electric power.
- 2. Multiple Choice
What is the most likely reason the author wrote this selection?
To encourage the reader not to waste food
To show the reader that many different types of biofuels are being used
To demonstrate that creativity can help solve environmental problems
To argue the importance of preventing methane from escaping into the atmosphere
- 3. Multiple Choice
In paragraph 4, why does the author compare anaerobic digesters to stomachs?
To show how the silos use bacteria to change the food waste into methane
To describe how vehicles use the biofuel created by the silos
To emphasize that the silos produce the same amount of methane as landfills
To suggest that the food waste collected in silos comes mainly from leftover meals
- 4. Multiple Choice
What is the most likely reason the author included the information in paragraph 6?
To suggest that it is difficult to collect food waste
To argue that food waste is a growing problem
To highlight that food waste is a renewable and useful resource
To reveal that food waste is difficult to control
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