<span>Invertebrates means having no backbone.</span>
The correct answer is C. Artiodactyls
They've been around more than the others and have existed for some 55 million years.
Answer:
Because of the Earths rotation
Explanation:
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Answer:
In addition to erythropoietin, red blood cell production requires adequate supplies of substrates, mainly iron, vitamin B12, folate, and heme. RBCs survive about 120 days.
Explanation:
