The order is:
interphase
prophase
metaphase
anaphase
telophase
(the way i remember it is "IPMAT")
The substance that is not an element is water, it is formed by one atom of the element oxygen and two atoms of the element hydrogen.
The rest of the substances, iron, oxygen, carbon and hydrogen, are pure elements formed by equal atoms.
The crown, gum line, root, enamel, dentin, pulp.
Aquatic ecosystems can be classified as freshwater and marine ecosystems.