Coral reefs are built from the calcium carbonate secretions of coral polyps, and the resulting structures provide shelter and homes for a diverse group of organisms. However, many of these reefs are decreasing in size, due to the effects of climate change, and the animals that rely on them are in danger of extinction. Which activity would have a negative impact on biodiversity in coral reefs? 1.Increasing use of fossil fuels 2.Developing technologies that would reduce the amount of pollutants produced 3.Increasing use of sustainable technologies 4.Increasing the use of renewable energy sources

Q: E. sponges

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