Answer:
a. insulation
Explanation:
The myelin sheath provides increased cell isolation (increased membrane resistance) because there are no membrane leakage channels in which there is myelin.
In addition to no membrane leakage channels, there is also virtually no type of membrane channel when there is myelin sheath (eg sodium and potassium pumps), which causes the cell a lower need for protein synthesis, or that is, less energy expenditure.
When you spin around, you lose balance because of fluid spinning around in the C) semicircular canals.
Muscles and internal organs
Answer:
A. Many dinosaurs were present in upper layers of rock strata, but not in lower layers.
Explanation:
In my opinion, this is the best possible answer.