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

Fact 2: Shallow tropical waters are remarkable places.

Given the two facts above, answer the question "where do corals form large colonies?" with the following options: 
- remarkable places
 - competing for resources
 - the environment
 - By wind and rain
 - It gets more light
 - Absorb light
 - To keep their body heat.
 - at or near the margins


 

 remarkable places        