Volcanic activity.
Hope this helps ;)***
Answer:
Myelin sheaths refer to the covering of fatty tissue, which safeguards the nerve cells. These cells are the components of CNS that conduct messages back and forth between the brain and the remaining parts of the body.
The majority of the nerve fibers are enveloped by an insulating, fatty sheath known as myelin that functions to accelerate the impulses. The myelin sheath comprises periodic breaks known as nodes of Ranvier. Hopping from nodes to nodes, the impulse can pass much more briskly than if it had to move along the whole length of the nerve fiber.
The
diagram shows the current percentage of each population by age and
gender (male/female) for two countries. After carefully analyzing the
graph I came with the conclusion that:
(1)
Country A, the population growth over the next 20 years will place
the greatest strain on the environment since the larger percentage of
young people could result in rapid population growth.
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hope this helps, Regards.
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This process of dna copying would be mitosis.
A. Marine organisms produce chemicals with more antibiotic properties than those from land organisms. i did this before i think we had the same qustion