Fact 1: Corals form large colonies in shallow tropical water.

Fact 2: Coral communities are found only in warm waters.

Given the two facts above, answer the question "Shallow tropical water is what?" with the following options: 
- porous
 - low in biodiversity
 - cold
 - uninhabited
 - pretty
 - rain
 - warm
 - calm


 

       warm  