Generate a sentence that answers this question: "Make sure to protect your eyes when working with chemicals because they can easily do what if handled wrong".

Answer: chemical splashing can cause harm to the eyes

Generate a sentence that answers this question: "Factories often add something to the environment that is".

Answer: polluting means something poisonous is added to an environment causing harm to the environment

Generate a sentence that answers this question: "As Ethanol burns it expels what into the ozone".

Answer:
biofuel releases carbon dioxide into the atmosphere