Rowan is doing a project on soft corals. which is the correct way for rowan to describe soft corals?

Rowan's correct way to describe soft corals is by saying, "Soft corals are a species of coral that have no internal calcium carbonate skeleton."

Explanation:

Soft corals are a group of coelenterates that are characterized by not having an internal calcium carbonate skeleton. They form colorful coral reefs, especially in tropical waters.

These marine invertebrates belong to the order Alcyonacea, which, in turn, includes two groups: the true soft corals, or sea feathers, and the gorgonians, or sea fans, consisting of an internal protein axis.

Unlike hard corals, true soft corals rely on skeletal elements called sclerites. These calcified spicules ensure support and firmness, as well as a spiny texture that aids in their defense.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.