44 Corals are a group of organisms that live in shallow, warm areas of the world's oceans. Coral reefs are composed of a hard material that is produced by these small coral animals, and is then colonized by photosynthetic
organisms called Zooxanthellae. These plant-like organisms generate sugars that are used by their animal
partners for food and are needed for the survival of the coral.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.