Of the following statements about the characteristics of the deep-ocean floor, which is/are true?
-Species diversity in the deep ocean can rival that of tropical rain forests.
-Even in tropical latitudes, water temperatures in the deep ocean are near freezing.
-Deep-ocean communities exist in the bathyal, abyssal, and hadal zones.
-Only about 1% to 3% of the food produced in the euphotic zone reaches the deep-ocean floor.