<span>The correct answer is 'secondary consumer’. This is because the yellowfin tuna eats herbivorous fish (these are primary consumers - they only eat plants, which are producers) and take refuge from predators. This shows they are not tertiary consumers, as tertiary consumers are at the top of the food chain.</span>
C. The liquid in Beaker A is not as dense as the liquid in Beaker B.
B. sulfur tetrafluoride + water → hydrogen fluoride + sulfur dioxide
