The word they in paragraph 1 refers to_______.
the effects of climate change
Correct Answer: EASY
Answer D. researchers
Proof: The scientists say climate change linked to human causes has led to warming oceans that can harm sea life. They say if the more heat-resistant corals they developed do well in the ocean, the method can be used to help save suffering and dying reefs.
Scientists say that human-related climate change can cause the oceans to heat up and harm seafloor life. They say that if the more heat-tolerant corals they have produced work in the wild, the method could be used to save endangered coral species.