Question

\some experts think that overfishing is one of the main reasons the population of the nomuras jellyfish has been increasing. the nomuras jellyfish eats the same types of plankton as many fish do in the sea of japan. usually, because the jellyfish and fish are competing for food, the two groups stay about the same size. but due to overfishing in the sea of japan, there are less fish in the water than there were in the past. this means that the nomuras jellyfish has a larger food supply. because of this larger food supply, the nomuras jellyfish population has increased more and more.\ what conclusion can you draw from this evidence? a the fish in the water have decreased from poor weather and so the nomuras jellyfish food supply has increased. b if the nomuras jellyfish did not eat plankton, their population in the sea of japan may not have declined.

Explanation:

The text states that overfishing reduces fish population, leading to more food (plankton) for Nomura's jellyfish, increasing their population. Option B is correct as it implies that if they didn't eat plankton (a key food source), their population situation (increase due to more plankton from less fish competition) would be different. Option A is wrong as the text says overfishing (not poor weather) causes fish decrease.

Answer:

B. If the Nomura's jellyfish did not eat plankton, their population in the Sea of Japan may not have declined.