question: What sentence would provide a factual answer to this question: "If a thing is a producer of pollen and seeds, it may be located in"

answer: a flower produces pollen and seeds

question: What sentence would provide a factual answer to this question: "Rubbing calcium on a streak plate"

answer: when a mineral is rubbed on a streak plate , some of the material breaks off and forms a powder

question: What sentence would provide a factual answer to this question: "Winter in the Northern Hemisphere"

answer:
December is during the summer in the southern hemisphere