Question

unit: informed opinions through causal chains
progress
question id 6402
what does the word sustainable mean as it is used in paragraph 1 of the passage?
fit to eat
can be maintained
enough to share
alive or present
reading passage
overfishing
1 the world faces a calamitous food crisis if we do not stop overfishing. according to the united nations, about one billion people, mostly in developing countries, rely on fish as their primary source of animal protein. what will they do when the fish run out? that crisis could occur soon. while there will probably never be a time when we do not have fish, there could come a time when we no longer have enough fish. the cause of this fish shortage is overfishing. overfishing occurs \when more fish are caught than the population can replace through natural reproduction,\ according to the world wildlife foundation. once this occurs, the species is no longer \sustainable.\

Explanation:

The passage discusses overfishing and its consequences. The key context is that when more fish are caught than the population can replace (overfishing), the species is no longer "sustainable". The word "sustainable" in environmental and resource - related contexts often means something that can be maintained over time. In this case, a fish species that can replenish its numbers (be maintained) is sustainable, and when overfished, it loses that ability.

Answer:

can be maintained