Which is the broadest classification level?

Kingdom is the broadest classification level because it contains thousands of species.

Explanation: Kingdom is the broadest group because all the living creatures classified first in the kingdom. After that, they are classified into phylum and then into class, order, family, genus and specie. Specie is the smallest classification level of organism. When we go from kingdom to specie, the population of organisms decreased.

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.