According to the passage, why are
Reading
Read the text and answer by selecting all the correct responses. More than one is correct.
Passage
Coral reefs are sometimes called the rainforests of the sea. They support a quarter of all marine species, provide food for coastal communities, and protect shorelines by breaking the force of waves. They also attract tourism, which can be an important source of income. Yet warming and acidifying oceans now threaten reefs worldwide.
According to the passage, why are coral reefs valuable?
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