Climate change can have a large impact on coral reefs. how does climate change impact coral?

climate change decreases the ph of seawater, which makes it harder for coral to grow.
climate change lowers the temperature of seawater, which interferes with coral's symbiotic relationship with algae.
climate change keeps ph levels of seawater stable, which allows coral to grow rapidly.
climate change raises the temperature of seawater, which interferes with coral's symbiotic relationship with algae.