Pretty sure the correct answer is D
Answer:
lanthanoids and actanoids I believe.
<em>The lipid bilayer consist of two band of fat cells coordinated in two pieces.</em>
We are all carbon based organisms , so i would say that carbon is the most important element to us and to all living organisms oxygen and hydrogen are important too but...
but every element is really important to all living things , without one Element we can't function a certain organ , like a puzzle , without one piece it wouldn't be right
