The health, management, and conservation of biodiversity is a challenge facing ecosystems worldwide. The major factors that affect the health and function of the Great Barrier Reef are climate change and pollution. Which question investigates the effects
of abiotic factors on the reef ecosystem?

A)
How do calcium levels affect the habitat of stony corals?
B)
How do nitrogen levels affect the number of algae in the reef?
C. How does the number of predators affect the lionfish population?
D
How does water temperature affect the reproduction rate of coral?