Question

What happens to algae when the temperature in the ocean becomes too hot?
The algae becomes pale
The algae thrive, providing benefits for choral
The algae become harmful to coral, and are expelled
The algae are susceptible to infection

Answer 1

3. The algae become harmful to coral and are expelled.

Answer 2

and disease
The algae produce toxic compounds that can harm marine organisms
The algae can die off, leading to a decrease in oxygen levels in the water.