The following text is about environmental science.
Coral reefs are often called the "rainforests of the sea" because of their remarkable biodiversity. A single reef can support thousands of species, from tiny invertebrates to large fish and sea turtles. Beyond their ecological importance, coral reefs provide significant economic benefits to coastal communities through fishing and tourism. Scientists estimate that reefs provide goods and services worth $375 billion annually worldwide.
Which choice best summarizes the text?
Coral reefs face numerous environmental threats
Coral reefs are valuable both ecologically and economically
Tourism is damaging coral reef ecosystems
Sea turtles depend entirely on coral reefs for survival
Correct Answer: B
Choice B is the correct answer. The text discusses both ecological value (biodiversity, "rainforests of the sea") and economic value (fishing, tourism, $375 billion).
- Evidence: Mentions "remarkable biodiversity" and "$375 billion annually."
- Reasoning: The text presents two types of value—ecological and economic.
- Conclusion: Both values are central to the text's message.
Choice A is incorrect because threats are not discussed. Choice C is incorrect because tourism is presented as a benefit, not a damage. Choice D is incorrect because sea turtles are just one example of reef species.