Coral: Is It a Animal, Plant, or Mineral?

Polyp, a tiny sea animal, introduces Atoll, a mineral, and Algae, a plant. Animal, Mineral, and Plant are coral. They are ancient sea life--older than dinosaurs. Their partnership is explored while they thrive in a sunny place underwater. When Greenhouse Effect warms the air and ocean Polyp and Algae separate due to a warmer sea. Coral bleaches. The La Niña weather pattern brings cooler temperatures and a new friendship with Alga that revives Polyp and the reef. Notes explain the importance...