The Modern Hexacorals That Build Reefs in the World's Oceans

question 18

Multiple Choice

The modern hexacorals that build reefs in the world's oceans experienced their first adaptive radiation during

• A) Paleocene.
• B) Late Cretaceous.
• C) Middle Jurassic.
• D) Late Triassic.

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Definitions:

Ionized

Refers to an atom or molecule that has gained or lost electrons, thus acquiring a charge and becoming an ion.

Nonionized

Referring to molecules that do not carry an electric charge due to loss or gain of electrons, affecting their solubility and reactivity.

Functional Group

A specific group of atoms within a molecule that is responsible for a characteristic chemical reaction of that molecule.

Chemical Properties

Characteristics of a substance that become evident during a chemical reaction, revealing the composition of the substance and how it reacts under certain conditions.