Answer:
Myelination
Explanation:
Myelin is a fatty substance composed of lipids which surrounds the axons of the nerve cells in the central nervous system. The myelin is formed by the oligodendrocytes in CNS and Schwann cells in PNS.
The plasma membrane of the oligodendrocytes containing the myelin covers the axons of the neurons in spiral fashion thus proving a sheath around through the process called "myelination".
This myelin sheath protects the neurons from the external environment as well as insulates the neuron which increases the efficiency of the impulse.
Thus, Myelination is the correct answer.
The answer is B. The planets were all formed from dust that was orbiting around the sun.
Answer:
No
Explanation:
If they were no more changes in the habitat, the value under larger that ample would not be correct this is because no spectacular changes has occur in the habits that could bring about a ample change. Habits is the environment an organism dwell and a change in the environment will affect positively or negatively the organism leaving there in.
An ample change can be seen if their is a modification in the environment that will better improve the livelihood of the organism.
Producer transfers energy from trophic level one to other organism, if the amount of producer is increased, a change in the habitat can be ample and positive because energy flow increases.
D: a nucleus
the prokaryote cell has no nucleus and for that matter no other membrane bound organelle
