One of the challenges that scientists face when classifying a new fossil is that any tiny detail is all that separates one species from another. Further exploration is required to identify another set of characteristics that may help in deciding which organism belongs or create a new class.
I believe the answer is Frictional Force
Question: Which two cellular structures provide protection to the cell?
Answer: cellular membrane and cell wall
Explanation: it prtoects the cell these two protect the cell from the enviormental things around it
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(jacemorris04)
