question: What sentence would provide a factual answer to this question: "Which of these is a side effect of vegetable farming?"

answer: runoff contains fertilizer from cropland

question: What sentence would provide a factual answer to this question: "a lighter object hue can lead to what?"

answer: as lightness in color of an object increases , the ability of that object to reflect light will increase

question: What sentence would provide a factual answer to this question: "To aid in keeping your outdoor animals warm in the winter"

answer:
a thermal insulator slows the transfer of heat