question: What sentence would provide a factual answer to this question: "As bad water increases in an environment the number of aquatic animals such as zooplankton will"

answer: if a population decreases to zero then that organism is extinct

question: What sentence would provide a factual answer to this question: "How can we see that refracting sunlight causes light to split into different colors?"

answer: refracting sunlight causes light to split into different colors

question: What sentence would provide a factual answer to this question: "Over your head is dark though it is only afternoon on a summer's day. Lacking an eclipse of the sun, a viable reason for this darkness is"

answer:
cloudy means the presence of clouds in the sky