Which feature is characteristics of healthy coral reefs?

The correct answer is option A, that is, shallow and clear water.

Coral reefs refer to the shallow-ocean habitats, which are occupied with sea life. The massive composition that coral reef comprises of is actually manufactured of coral polyps that are the small marine species, which live in colonies.

The hard compositions are left behind when these marine species die, and the branching and stony composition, which is left is limestone and is robust enough to produce a home for new species.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

answer: c. two haploid cells

explanation: