Answer: The skeletal portion of the system serves as the main storage is to help regulate mineral balance in the bloodstream.
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Fossils give evidence upon organisms the past are not the same as those found and demonstrate a progression of evolution.
Answer:
Species
Explanation:
Such as humans, we are a species because we all look similar and can reproduce with one another.
A shell is considered as biotic (living) because it is a hard, rigid covering of many animals such as snail, sepia, pila, turtles, sea urchins. A shell is protective outer layer of these soft bodied animals.
