Answer:
during the Cambrian Period of the Paleozoic Era.
Explanation:
The Paleozoic is the earliest era (of three) of the Phanerozoic Eon and is composed of six geologic periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian (in that order from earliest to the latest). Fish first appeared about 530 million years ago during the Cambrian explosion.
COMPACTION.
Sedimentary rock is a rock formed by layers of sediments settling down together forming one solid rock.
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Organisms on a island are more similar to those on a nearby land mass than to those in similar climates further away.
The statement is once the enzyme binds to the specific substrate molecule, structural changes can occur in the active site to accommodate the product.
