During the day in Lake Constance, the zooplankton D. hyaline departs for the depths where food is scarce and the water cold. D. galeata remains near the warm surface where food is abundant. Even though D. galeata grows and reproduces much faster, its population is often outnumbered by D. hyaline.
Which of the following, if true, most helps to resolve the apparent paradox?
Above is the question mentioned for the passage. What is the question asking us? I did not quite understand.