In coral reefs, the relationship exhibited by coral polyps and single-celled algae in which both benefit is known as: select one: mutualism parasitism interspecific competition commensalism predation

Gettysburg address question. lincoln uses the images of birth and rebirth in this address. why?

How is the uk’s government is solving the air pollution problem?

What if the united states, mexico, and canada took the eu’s example and joined to forms north american union ? based on your knowledge of the europe union, describe two setbacks or hurdles that this idea might face