Reef-building coral are marine animals with single-celled algae living in their tissues. The coral provides protection for tho algae and the algae provide food for the coral. Which of these statements best explains what would happen to the coral if the algae die?

Ascientist observes certain changes in the physical features of a particular species over time. she concludes that the species has undergone evolutionary change. she wants to study the animals by analyzing their population. she’ll use . the population of this species is decreasing considerably. if this trend doesn’t change, this species will fall under the category of animals. this is a plato question,i need to make up his biology credit.