Answer:
Mostly abundant Coral reef ecosystem
Explanation:
We know that,
There are 7 ecosystem in puerto rico but the grouper fisher such as nassau grouper is one of them that present in coral reef ecosystem.
Nassau grouper fish is one of the grouper fish that present in puerto rico island. It is now announced as danger in the US, and as risk by the International Union for Conservation of Nature.
Hence, Coral reef ecosystem is the most abundant in Puerto Rico
it is formed when the element chlorine gains an electron or when a compound such as hydrogen chloride is dissolved in water
Hydrogen chloride is polar becasue it has unequally shared electrons.